Answer:
Sulfuric acid, spent appears as a black oily liquid. Corrosive to metals and tissue. Density 15 lb /gal.
Explanation:
What is the molarity of sugar c12h22o11 if 20g of it are dissolved in water to make final volume upto 2L?
It is dissolved in water to provide a final volume of up to 2L with a molar concentration of 0.02925 mol L-1.
What objectives is it intended to achieve?To transition between photos that connect two scenes, the dissolve editing technique is traditionally utilized. A dissolve smoothly flows from one image to the next rather than cutting between shots.
Water dissolves in what?A few items that can dissolve in water include salt, sugar, and coffee. All of these things break down. In warm or hot water, they typically dissolve faster and easier. Sand and pepper are soluble when placed in hot water but not when placed in cold water.
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xef2o lewis structure
The shape of this is trigonal bipyramidal. By VSEPR arrangement the xenon atom present in Central and an oxygen is present in xef2o.
Xenon (Xe) serves as the main atom in the hybridization of xenon difluoride. Two electrons are located in the 5s orbital and six are located in the 5p orbital, respectively, if we count the number of valence shells in Xe. xef2o Its electrical ground state arrangement will be 5s2 5p6. Although its setup will alter to 5s2 5p5 5d1 when it is stimulated. Overall, the atomic orbitals of the xenon atom will be hybridised to produce 5 sp3d hybrid orbitals in the excited state configuration (5s, 5py, 5px, 5pz, and 5dzx). By overlapping the two partially filled 2pz atomic orbitals of fluorine, two-hybrid orbitals are created, which are then utilised to produce F-Xe-F sigma bonds. The three remaining hybrid orbitals with lone pairs are those that are not involved in bonding.
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which of the statements below correctly describes an achiral molecule? group of answer choices the molecule might be a meso form. the molecule exhibits optical activity when it interacts with plane-polarized light. none of the above the molecule has a nonsuperimposable mirror image. the molecule has an enantiomer.
A description of an achiral molecule as having optical activity when it interacts with plane-polarized light is accurate.
Of the following, which one is an achiral molecule?A few of examples of achiral compounds are (meso)-2,3-dibromobutane and trans-1,2-dichloro-1,2-ethanediol.
Regarding a pair of enantiomers, which of the following propositions is true?They rotate the polarized light plane in the same direction and by the same amount, but in different directions. The polarized light plane is rotated in the same direction and by the same amounts. The melting point and boiling point are among the physical characteristics shared by a pair of enantiomers. Meso compounds are numerous chiral centers in achiral molecules.
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What temp kills E coli?
When E.coli treated at 160°F or 71°C temperature it gets denatured and dies. This will be helpful in pasteurization of foods.
How heat affects E.coli?By properly boiling food, dangerous bacteria like E. coli and many others can be eliminated. Use a digital food thermometer to check that hamburger is cooked to an internal temperature of at least 71°C (160°F) because ground beef can become brown before disease-causing germs are eliminated.Heat causes changes in E. coli cells that affect the membrane, cytoplasm, ribosome, and DNA, especially when it comes to proteins and causes protein misfolding and aggregation.Heat-shocking makes it easier for plasmid to enter the capable cell. Applications like as protein expression or plasmid amplification will be possible with transformed cells in the future.For more information on E.coli kindly visit to
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Why are the elements at the bottom of the periodic table?
Answer:
Electron configurations
Explanation:
answer
Classify the following species as aromatic, nonaromatic, or antiaromatic: Sort these molecular species into the proper categories Reset Help CH2 :N ёнг 9 Nonaromatic Aromatic Antiaromatic
The classification of the following species as aromatic, nonaromatic, or antiaromatic is attached.
Aromatic refers to a class of chemical compounds that have a cyclic rotation of (4n+2) electrons. These chemicals are significantly more stable than other compounds in their class. Where, n = 0,1,2,3.......
Anti-aromatic compounds are those that have a cyclic rotation of 4n+ electrons in their electronic configuration. The stability of these compounds is significantly lower than that of typical compounds.
The term "nonaromatic" refers to any other kind of compound outside aromatic ones. The classification of the given compounds according to the nature of the aromatic ring is attached as a picture.
The proper question is attached.
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Write a balanced chemical equation for the formation of NaHSO4
Answer:
2 NaOH + H2SO4 -> Na2SO4 + 2 H2O
If you react H2SO4 with NaOH, then NaHSO4 is formed.
H2SO4+NaOH - NaHSO4+H2O
what energy change accompanies this electron movement? a. the atom absorbs four photons of light. b. the atom absorbs one photon of light. c. the atom emits four photons of light. d. the atom emits one photon of light.
One photon of light energy is changed within the atom as a result of this electron migration.
Is atomic mobility the source of electrical energy?Electron mobility is the source of electrical energy. Everything is composed of little units known as atoms. Even smaller particles known as electrons, protons, and neutrons make up atoms. Some of the electrons can move by exerting force.
What kind of energy does an atom's nucleus contain?Nuclear energy is the term used to describe the energy present in the nucleus, or core, of an atom. Electricity can be produced using nuclear energy, but it first needs to be released from the atom.
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propose an efficient synthesis for the following transformation
Answer:
Without more information about the specific transformation in question, it is not possible to propose an efficient synthesis for it. In general, the development of an efficient synthesis for a particular transformation involves a combination of scientific knowledge, chemical expertise, and creative problem-solving. The specific steps involved in an efficient synthesis will depend on the particular starting materials, the desired products, and the conditions under which the transformation takes place. Some common strategies for developing efficient syntheses include optimizing reaction conditions, using catalysts to accelerate reactions, and finding alternative reactions that produce the desired products more efficiently
How do you tell if a compound is ionic polar covalent or nonpolar covalent?
A compound is considered to have a polar covalent nature if one part of it is partially positive while the other is partially negative .
A compound called nonpolar covalent in nature if an atoms share an equal number of electrons.
Thus in a polar covalent compound there is difference in the electronegativity whereas there is no such difference in the case of nonpolar covalent compounds.
There is formation of positive and negative ions in the polar covalent compounds known as anions and cations , there is no such ion formation in case of nonpolar covalent compounds.
These are certain differences using which we can identify if a compound is ionic polar covalent or nonpolar covalent.
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Suppose you had four spoons, the same size and shape, made out of glass plastic steal and wood which spoon handle would get hot the quickest when the spoons are placed in a pan of hot water.
Steel spoons heat up the fastest of all other spoons. This is because steel is primarily composed of metals with metallic properties such as heat conduction.
Why do metals conduct heat so quickly?The specific heat capacity of metals is small. H. Amount of heat required to raise 1 g of substance by 1°C.
This is how metals conduct heat very quickly. Delocalized electrons around the central nucleus play a very important role. Other properties derived from metallurgical bonding include ductility, malleability, and luster.
Therefore, of the four spoons of the same size and shape, the iron spoon heats up the fastest.
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What happens after a substrate binds to an enzyme?
The enzyme-substrate complex undergoes a conformational change, and the substrate is chemically modified by the enzyme.
An enzyme undergoes a conformational change when a substrate binds to its active site, bringing the substrate closer to the enzyme's catalytic site. The area of the enzyme where the chemical reaction takes place is called the catalytic site. The enzyme chemically alters the substrate at the catalytic site by transferring a chemical group or rupturing or forming chemical bonds.
One or more products are produced as a result of this chemical modification of the substrate. The enzyme is then free to bind and catalyze the reaction with additional substrate molecules after the product(s) have been released.
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draw a stepwise mechanism for the following reaction
In the reaction described, the OH group accepts the proton of sulfuric acid. Consequently, one water molecule is eliminated,ans further the process was done to get the desired result.
After the elimination, a secondary carbocation is produced. This carbocation then goes through a 1, 2-hydrogen shift to produce a more stable tertiary carbocation. A cyclic molecule is produced as a result of the alkene's addition of electrons to the tertiary carbocation.
Carbonation is the addition of carbon dioxide gas to a beverage to give it sparkle and a tangy flavor while also preventing spoilage. Under pressure, the liquid is chilled and cascaded down in an enclosure containing carbon dioxide (either as dry ice or as a liquid). Gas absorption is maximized by increasing pressure and decreasing temperature. Pasteurization is not required for carbonated beverages.
Below is a diagram of the mechanism:
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Based on hydrogen emission, where is star formation occurring?
Based on hydrogen emission, where is star formation occurring are : the left arm and the right arm.
The molecule of the hydrogen gets apart in to the hydrogen atom when the temperature of the core reaches the temperature of about the 2000 degrees of the kelvin. when the core reaches to the temperature of the 10000 degrees of kelvin and it will starts to look like a star when the fusion reaction starts. the fusion reaction occurs when two lighter nuclei will combine to form the heavier one.
Thus, at the left arm and the right arm, Based on hydrogen emission, where is star formation occurring.
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Classify the following as intensive or extensive properties of zinc. Drag the appropriate items to their respective bins. View Available Hint(s) Reset Help bluish gray in color has a mass of 63.74 g begins to melt at 419.58 degrees Celsius has a volume of 8.94 mL has a density of 7.13 g/mL Intensive Extensive Submit Part B You are given a sample resembling zinc. Which of the following properties could be used to help determine whether the sample is really zinc? Check all that apply. View Available Hint(s) the melting point of the sample the volume of the sample the density of the sample Submit
(A): Bluish-gray in color, (C): begins to melt at 419.58 degrees Celsius,and (E): has a density of 7.13 g/mL are classified as intensive properties of zinc; while (B): has a mass of 63.74 g, and (D): has a volume of 8.94 mL are characterized by extensive properties of zinc.
An intensive property is a property of matter that is dependent only on the type of matter in a certain sample and not on the quantity. Color, density, solubility, and temperature are examples of intensive properties. On the other hand, an extensive property refers to a property that depends on the quantity of matter in a sample. Volume and are examples of extensive properties.
Answer to the question number 2 is as follows:
(A): The melting point of the sample and (B): the density of the sample help to determine if a given sample is really zinc.
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What form of energy keeps your hands warm when you hold a glass of hot chocolate?
Your hands receive a heat transfer from the hot chocolate. Heat energy is exchanged between two objects when their temperatures differ. When the two items reach the same temperature, the cooler object becomes warmer.
How much energy is in hot chocolate?The vibrations of the hot chocolate's particles provide thermal energy. Some of this energy is transmitted from the chocolate to the milk's granules when you add cold milk to hot chocolate.
Your hands are getting warm from what kind of heat transfer?A fire emits thermal energy that warms a person's hands. One of the three ways that thermal energy can be delivered is by thermal radiation. Convection and conduction are the other two methods, both of which require matter to transfer energy.
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What i the difference between expanion and contraction? Chapter - Mattter
Cla - 6
Expansion is the process of an object increasing its size or volume, while contraction is the process of an object decreasing its size or volume. Both expansion and contraction occur in response to a change in temperature.
When an object is heated, it expands as the molecules within it begin to move faster. This increases the distance between the molecules, causing the object to increase in size and volume. Conversely, when an object is cooled, the molecules within it slow down, and the distance between them decreases. This causes the object to contract and decrease in size and volume.
Expansion and contraction are both physical properties of matter. Expansion and contraction occur in all states of matter, including solids, liquids, and gases. Expansion and contraction can also occur in non-matter objects, such as air and water.
Expansion and contraction have practical applications in everyday life. For instance, in construction, expansion and contraction are taken into account when designing bridges and other structures. The expansion and contraction of metal, concrete, and other materials due to changes in temperature must be taken into account in order to prevent structural failure.
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Draw the product of this series of reactions. 1. Br2, hv 2. KOtBu 3. 03 4. (CH3)2S Use the wedge/hash bond tools to indicate stereochemistry where it exists. If a group is achiral, do not use wedged or hashed bonds on it. . If the reaction produces a racemic mixture, draw both stereoisomers. Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate multiple products using the + sign from the drop-down menu.
The series of products formed in the given synthesis reaction is shown in the attached diagram below.
What is the synthesis reaction?Synthesis reactions can be described as reactions that take place when two different atoms or molecules interact to prepare a different molecule or compound. Most of the time, when a synthesis reaction takes place, energy is released and the reaction can be considered exothermic.
When two or more reactants react together to combine and generate a new product, which is a compound with new properties. They synthesize and prepare a new substance, therefore it is called a synthesis reaction.
The reaction of bromine with cyclopentane gives the Bromo-cyclopentane in photochemical conditions. The presence of the bulky base leads to the elimination of the bromine as leaving group. The ozonolysis of the alkene leads to the ring opening the cyclic system. Therefore, at the end of the reactions, we obtain an acyclic product.
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What is the freezing point in degrees Celsius of a 1.33 molal solution of C 6 H 14 in benzene? The boiling point of benzene is 80.1 degrees Celsius and the boiling point elevation constant for benzene is 2.65 degrees Celsius per molal. Give your answer to the thousandths place.
The freezing point of pure benzene is 5.48 °C. The depression in freezing point is calculated to be 6.80. Thus, the freezing point of the 1.33 molal solution is -1.32 °C.
What is freezing point ?Freezing point of a substance is the temperature at which its liquid state converts to its solid state where, the solid phase and liquid phase are in equilibrium.
The addition of a non - volatile solute to the solvent decreases the freezing point of the solution from that of the pure solvent. This decrease is a colligative property.
The depression in freezing point ΔTf = kf m
kf or depression constant of benzene = 5.12 °C /molal
freezing point of pure benzene = 5.48 °C
ΔTf = 5.12 °C /molal × 1.33 = 6.80
Therefore, the freezing point of the 1.33 molal solution is :
T (soln) = 5.48 - 6.80 = -1.32 °C
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Select all the statements that correctly describe the molar heat of vaporization for a substance.
a. ΔHvap is the amount of heat required to vaporize 1 mole of a substance at its boiling point.
b. ΔHvap is a positive quantity.
c. Both the boiling point and ΔHvap of a molecular substance are related to the strength of the intermolecular forces.
Answer:ΔHvap is a positive quantity.
ΔHvap is the amount of heat required to vaporize 1 mole of a substance at its boiling point.
Both the boiling point and ΔHvap of a molecular substance are related to the strength of the intermolecular forces.
Explanation:
cuz im like that
The molar heat of vaporization for a substance describes ΔHvap is the amount of heat required to vaporize 1 mole of a substance at its boiling point, ΔHvap is a positive quantity. Therefore, option A and B are correct.
What is molar heat ?The amount of heat needed to elevate 1 mole of a substance by 1 degree Kelvin is known as the molar heat capacity. Similar to specific heat capacity, molar heat capacity measures per mole rather than per gram of substance.
The amount of energy needed to raise the temperature of one gram of substance by one degree Celsius is known as an object's specific heat capacity. The quantity of energy needed to raise the temperature is known as the molar heat capacity.
One mole of that substance absorbs a certain amount of heat, known as the molar heat of vaporization. The magnitude of the intermolecular forces influences the values of the temperatures of fusion and vaporization.
Thus, option A and B are correct.
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Is Gibbs free energy 0 for elements?
Yes, for pure elements the Gibb's free energy is equivalent to 0.
The Gibbs free energy is a concept in chemistry specially of thermodynamics. The maximum amount of work that can be accomplished at a constant temperature and pressure by a closed system can be calculated using the Gibbs free energy (also known as Gibbs energy; symbol: denoted as delta G). Additionally, it offers a prerequisite for any processes like chemical reactions that might take place in such circumstances.
When a system achieves equilibrium without being pushed by an input electrolytic voltage, the Gibbs energy is the thermodynamic potential that is reduced. At the equilibrium point, its derivative w.r.t. the system's reaction coordinate vanishes.
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Draw the Lewis structure of CHO, that obeys the octet rule. (Assign lone pairs, radical electrons, and alorric charges where appropriate.) Marvin JS Help C. :O: Edit drawing Calculate the electrons required (ER), valence electrons (VE), shared pairs (SP), and lone pairs (LP). ER 26 VE 18 SP 4 LP 5
The Lewis structure of CHO, which obeys the octet rule is attached as a picture. electrons required (ER) = 26, valence electrons (VE) = 18, shared pairs (SP) = 4, and lone pairs (LP) = 5.
The total number of valence electrons in the molecule, which is present in each individual atom, is represented by that atom.
The valence electrons in the CHO- = 4 + 6 + 1 + 1 = 12.
Since C, O, and H are group IVA, VIA, and IA elements, their valence electrons are 4, 6, and 1, respectively. For every negative charge, an additional electron is added.
Electrons required (ER) = 26
Valence electrons (VE) = 18
Shared pairs (SP) = 2 + 2 + 4 =8 (means 4 shared pairs)
Lone pairs (LP) = 3 + 2 = 5
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calculate the amount of daughter isotope that has been produced after 1, 2, 3, and 4 half-lives. include 4 decimal places in your answers daughter present: 0.0000 unit (i.e., no daughter isotope is present) after 1 half-life: 0.5000 units
The amount of daughter isotope that has been produced after 1, 2, 3, and 4 half-lives is 0.9375.
remaining after 1 half life = 1.0000/2 = 0.5000
remaining after 2 half lives = 0.5000/2 = 0.2500
remaining after 3 half lives = 0.2500/2 = 0.1250
remaining after 4 half lives = 0.1250/2 = 0.0625
For parent isotope:
In each half life the amount of remaining parent isotope will be half of the remaining of previous half life.
Therefore,
Parent present = 1.0000
present after 1 half life = 0.0000+ (1.0000 - 0.5000)=0.5000
present after 2 half lives = 0.5000+ (0.5000 -0.2500) = 0.7500
present after 3 half lives = 0.7500+ (0.2500 -0.1250) = 0.8750
remaining after 4 half lives = 0.8750+ (0.1250 - 0.0625)=0.9375
For daughter isotope:
The amount of daughter isotopes will be found by adding the value by which the number of parent isotope is decreased by in the relevant half life to the available daughter isotopes.
Daughter isotopes initially present: 0.0000
Daughter isotope Parent isotope Daughter to
present remaining parent ratio
Starting state: 0.0000 1.0000 0.0000/1.0000 =0
After 1 half life: 0.5000 0.5000 0.5000/0.5000=1
After 2 half lives: 0.7500 0.2500 0.7500/0.2500=3
After 3 half lives: 0.8750 0.1250 0.8750/ 0.1250=7
After 4 half lives: 0.9375 0.0625 0.9375/0.0625=15
the amount of daughter isotope that has been produced after 1, 2, 3, and 4 half-lives is 0.9375.
and Ratio of the amount of daughter to the amount of parent isotope is 15.
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n aqueous nitric acid solution has a ph of 1.89. what mass of hno3 is present in 6.41 l of this solution?
Answer:
474.6g
Explanation:
The pH of an aqueous solution is a measure of the concentration of hydrogen ions (H+) in the solution. A solution with a pH of 1.89 is relatively acidic, which means that it has a high concentration of H+ ions. Nitric acid (HNO3) is a strong acid that dissociates completely in water to form H+ ions and NO3- ions. Therefore, the concentration of H+ ions in an aqueous nitric acid solution is equal to the concentration of nitric acid (HNO3) in the solution.
To find the mass of HNO3 in the solution, you can first calculate the concentration of HNO3 in the solution using the concentration of H+ ions and the number of H+ ions produced by each molecule of HNO3:
[HNO3] = [H+] / (2 H+ ions / molecule HNO3)
Since the concentration of H+ ions in the solution is equal to the pH of the solution, you can substitute the pH of the solution (1.89) for the concentration of H+ ions:
[HNO3] = 1.89 / (2 H+ ions / molecule HNO3) = 0.945 M
To find the mass of HNO3 in the solution, you can multiply the concentration of HNO3 by the volume of the solution and the molar mass of HNO3:
Mass HNO3 = [HNO3] * Volume * Molar mass HNO3
= 0.945 M * 6.41 L * 63.01 g/mol
= 474.6 grams
Therefore, the mass of HNO3 in 6.41 L of the aqueous nitric acid solution is approximately 474.6 grams.
How do you measure a scope 2?
To measure scope 2 emissions, an organization first needs to gather data on the types and quantities of energy it consumes, such as electricity, natural gas, and fuel oil.
Scope 2 emissions are greenhouse gas (GHG) emissions that result from the generation of electricity, heat, or steam that an organization consumes. These emissions are often referred to as "indirect emissions" because they are not directly emitted by the organization itself, but rather by the source of the energy that the organization consumes.
The organization can then use GHG emissions factors, which are data on the average emissions intensity of different energy sources, to calculate the emissions associated with its energy consumption.
For example, if an organization consumes 100,000 kilowatt-hours (kWh) of electricity from a coal-fired power plant, it can use the GHG emissions factor for coal-fired electricity to calculate the associated scope 2 emissions. The GHG emissions factor for coal-fired electricity might be 0.9 metric tons of CO2e per MWh, so the scope 2 emissions for the organization in this example would be 90 metric tons of CO2e (100,000 kWh x 0.9 metric tons CO2e/MWh).
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How many atoms of magnesium are in 1.00 g?
Answer:
2
Mg has a molar mass of 24.3 g/mol. Hence, the number of atoms of Mg in 1.00 g is 2.
2.47 x [tex]10^{22}[/tex] atoms are there in 1.00 g. In chemistry, atoms are the fundamental building blocks of matter.
Atoms are the fundamental constituents of matter and the smallest units of an element that nevertheless retain its chemical characteristics. As they come together to create molecules, which then give rise to more complex structures, atoms are the subject of research in chemistry. Protons, neutrons, and electrons are the three primary subatomic particles that make up an atom. Neutrons have no charge, protons have a positive charge, and electrons have a negative charge. The quantity of protons determines an element's atomic number and establishes its identity.
Number of moles of Mg = (1.00 g) / (24.305 g/mol)
= 0.0411 mol
Number of atoms = (0.0411 mol) x (6.022 x [tex]10^{23 }[/tex]atoms/mol)
= 2.47 x [tex]10^{22}[/tex] atoms
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which metal has highest melting point
Answer:
The metal with the highest melting point is tungsten, which has a melting point of about 3,410 degrees Celsius (6,170 degrees Fahrenheit). Tungsten is known for its high melting point and excellent resistance to wear and corrosion, which makes it a useful material in many industrial applications.
Other metals with high melting points include osmium (3,060 degrees Celsius), rhenium (3,180 degrees Celsius), and tantalum (2,996 degrees Celsius). These metals are also known for their excellent resistance to wear and corrosion, and are used in a variety of industrial and technical applications.
It is worth noting that the melting point of a metal can depend on the purity and crystalline structure of the sample, and can vary slightly from one sample to another. However, tungsten is generally considered to have the highest melting point of any pure metal.
Diphenylmethanol Infrared Spectrum 1.005 1.000 0.995 0.990 Transmitance чалгү 0.985 0.980 0.975 3750 3500 3250 3000 2750 2500 2250 2000 1750 1500 1250 1000 750 Wavenumbers (cm-1)
Interpret the IR spectrum of Diphenylmethanol.
Absorption of free OH bonds occurs at about 3650 cm⁻¹ Since it is a free hydroxyl group, the frequency range is high. This result indicates that there are no hydrogen bonds.In the IR spectrum, we see that the peak is around 3100–3000 cm⁻¹, telling us that this range represents the range of aromatic CH molecules (sp 2 CH).In addition, we see a peak around 2900 cm⁻¹, which is the presence of the Sp 3 CH bond band.The aromatic part of the compound contains an asymmetric C=C bond with an IR absorption peak of about 1630 cm⁻¹The compound contains CO bonds, for a frequency this voltage is detected at about 1050 cm⁻¹.Diphenylmethanol is an organic compound with the formula (C₆H₅)₂CHOH. Also known as benzhydryl, it is a white solid and the parent member of the large class of diary alcohols.
Infrared (IR) spectroscopy is a method that observes the interaction of molecules with electromagnetic radiation in the wavelength region of 0.75 – 1,000 µm or at wave numbers of 13,000 – 10 cm⁻¹
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question content area what are its electron-pair and molecular geometries? what is the hybridization of the nitrogen atom? what orbitals on and overlap to form bonds between these elements? electron-pair geometry
Molecular geometry refers to how atoms are arranged within a molecule, typically in relation to a single center atom. Because the nitrogen is sp3 hybridized, it possesses four sp3 hybrid orbitals.
What are the definitions of the electron pair and molecule geometries?By taking into account both lone pairs and bond pairs, electron pair geometry can forecast the form of a molecule. By merely taking into account bond pairs, molecular geometry may predict the form of a molecule.
N2 sp2 hybridization is it possible?The nitrogen atom likewise hybridizes in the sp2 configuration, but unlike the carbon atom, it has a "lone pair" of remaining electrons that are not involved in the bonding. As a result, the geometry of nitrogen with three bonded ligands is trigonal pyramidal.
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a 5.172 g sample of a solid, weak, monoprotic acid is used to make a 100.0 ml solution. 35.00 ml of the resulting acid solution is then titrated with 0.09701 m naoh. the ph after the addition of 25.00 ml of the base is 5.32, and the endpoint is reached after the addition of 47.04 ml of the base.(a) how many moles of acid were present in the 35.00 ml sample
In titration of an unknown weak monoprotic acid, equivalence point is reached when the acid (analyte) is completely neutralized by base (analyte).
One mole of acid produce one mole of acetate; so,
0.025 L acid x 0.1 mol base = 0.0025 mol
1 L soln
0.0025 mol x 1 mol = 0.0025 mol
1 mol acid
So, what volume is the acetate i will, Not 35 mL you added a solution
of acid
how much base did we add? 1 mol acid for the 1 mole of base
0.0025 mol CH₃CO₂H x 1 mol NaOH = 0.0025 mol NaOH
1 mol CH₃COOH
where did the NaOH come from? a 0.1 M NaOH solution
0.0025 mol of the NaOH x 1 L of solution = 0.025 L of the NaOH
0.1 mol NaOH
so, total volume is
total voumel = volume of acid + vol titrant
vol = 0.025 L + 0.025 L = 0.050 L
So, the concentration is
0.0025 mol of acid
= 0.050 M
0.050 L
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