Answered: 10. Which one of the following 3 buffer…

10. Which one of the following 3 buffer systems is best suited for keeping pH at 7 (-logKa = pka)? HSO3-/SO32- a. b. H2PO4- / HPO42- c. HPO42- / PO43-

Chemistry by OpenStax (2015-05-04)

1st Edition

ISBN:9781938168390

Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser

Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser

Chapter14: Acid-base Equilibria

Section: Chapter Questions

Problem 100E: What mass of NH4Cl must be added to 0.750 L of a 0.100-M solution of NH3 to give a buffer solution...

See similar textbooks

Related questions

Q: Part A Enter an equation for the precipitation reaction that occurs (if any) when solutions of…

Q: Determine the mass in grams of 2.30 moles of Ca(OH)2

A: Moles = It is the ratio of given mass of a substance to its molar mass Moles = mass/molar mass…

Q: For the chemical reaction Ca (s) + ½ O₂ (g) → CaO (s) AH° = -635 kJ/mol. What is the molar enthalpy…

A: Enthalpy is extensive property. Extensive properties are the property which depends on the quantity…

Q: The following information is given for ethanol, C₂H5OH, at latm: AHvap (78.4 °C) 38.6 kJ/mol boiling…

A: In condensing, gaseous sample of ethanol is changed to liquid using the heat of vaporization. So…

Q: Acetylene, a fuel used welding torches, is comprised of 92.3% C and 7.7% H by mass. Find the…

A: Well, we will first determine the empirical formula. To find it, we have to convert the mass of C…

Q: Calculate the potential of the electrochemical cell and determine if it is spontaneous as written at…

Q: 4.) The following data were obtained for three minerals from a granite: Mineral #7Rb/St 7St/St…

A: Sr87Sr86t, R87bS86rt are the isotopic ratios present at time t and Sr87Sr860 is the isotopic ratio…

Q: Draw the product of the reaction shown below. Ignore inorganic byproducts. H₂O, heat - CO₂ Select to…

Q: 1. How many mL of 0.358 M H3PO4 would it take to neutralize 25.0 mL of 1.15 M Mg(OH)2? b.The [H3O+]…

A: we have to calculate mL of 0.358 M H3PO4 needed to neutralize 25.0 mL of 1.15 M Mg(OH)2

Q: (2) 12. If a buffer solution is 0.130 M in a weak acid (Ka = 5.80 x 10-5) and 0.560 Min its…

Q: click on Submit.) Pb(NO3)2 + Cal₂ The precipitate is Cu(NO3)2 + ZnBr₂ The precipitate is K₂CO3 +…

A: A precipitate is solid product formed by the reaction between the reactants. The product precipitate…

Q: Calculate TT for a gas that obeys the virial equation of state p RT Vm B(T) Vm = (1+ ·+ ...)

Q: The following compounds found in the crude solid product of the Grignard reaction mixture could be…

A: Triphenyl methanol is soluble in pure ethanol. It would be slow for recrystalisation.

Q: 2) A cyanide ion selective electrode obeys the equation : E (volts) = constant - 0.05916 log [CN]…

A: To find out the numerical constant, we need to plug the given values in the formula and calculate…

Q: For the following reaction, 43.6 grams of iron are allowed to react with 23.6 grams of oxygen gas.…

A: Given Weight of Fe metal = 43.6 g Weight of oxygen gas reacted = 23.6 g Atomic mass of Fe metal =…

Q: Exactly 23 100.00m

Q: FUSION 2 8. H 1 9. 253 + Es 3 PARTICLE ACCELERATION TO PRODUCE A TRANSURANIUM ELEMENT + H 4 2 1 04…

Q: In an organic chemistry lab how do you know which solvents are more polar, less polar, or not polar?

A: We have been asked In an organic chemistry lab how do we know which solvents are more polar, less…

Q: 6) Voltammetry - In linear scan voltammetry, the diffusion current is proportional to the…

A: The following equations will be needed to solve this set of problems: q=it .. (1) Here, q = charge i…

Q: 3-methylbutanal Route A 1-chloropropane Et₂O + Mg MgCl propylmagnesium chloride i) ELO ii) H₂O OH…

A: Less hindrance alkane will give less yield. Route A will give higher yield.

Q: Instruction For each reaction below, write the following information: 1. The type of the reaction…

Q: What is the major product of the reaction below? ☆ + enantiomer A T B) II с ||| D 1 IV V +…

A: Stereochemistry is branch in which we deal with three dimensional arrangement of atoms with in the…

Q: Carbon disulfide gas and oxygen gas react to form sulfur dioxide gas and carbon dioxide gas. What…

Q: Instruction For each reaction below, write the following information: 1. The type of the reaction…

Q: Chem 3A - Acid-Base Experiment - Part KHP Unknown Each student is to determine the percent of KHP…

Q: 6) How many grams of solute are in each of the following solutions? a) 1.20 L of 18 M sulfuric acid…

Q: How many grams are in 3.55 ✕ 1024 molecules of S8?

A: Molar mass of S8 = 256.52 g/mol We know, 1 mole of S8 contains 6.023 ×1023 molecules Or mass of…

Q: 1) BH, THF 2) H₂O2, NaOH

Q: Solid-state electrodes that respond to anions create a potential difference across the solid-state…

A: The negatively charged species are absent from their position in the anion vacancy defect and vacant…

Q: 0 a. Draw the structure of the tetrahedral intermediate INITIALLY FORMED in the reaction shown.…

Q: 5. 6. 14 7 N 32 7. S + 4 + 2 4 He 2 1 He V 1 0 17 8 1 - H O 12 + с

A: Given reactions are examples of radioactive decay. Radioactive decay is the process where an…

Q: For each of the following ethers, fill in the blank with the IUPAC NAME of the ether. butoxy)butane…

A: The IUPAC names of the given ethers are listed below -

Q: Also include two figures for the reaction mechanisms and discuss how the mechanisms relate to your…

Q: 3. Quantum Mechanical Wave Equation. Give the quantum mechanical wave equation that depends on space…

A: Quantum mechanics is that branch of science which deals with the wave nature of particle with…

Q: For the reaction 2 H₂O (1)=2H₂ (g) + O2 (g), the equilibrium expression is: O Keq= Keg [H₂2 [02…

A: Answer:- This question is answered by using the simple concept of writing the equilibrium constant…

Q: Predict the major products of this organic reaction. Be sure you use wedge and dash bonds when…

A: Here we are required to find the product of the reaction.

Q: Carbon monoxide (CO) is toxic because it binds more strongly to the iron in hemoglobin (Hb) than…

Q: 1) Describe Equimolar. 2) How is the maximum heat produced in a compete Neutralization? I

A: Question 1 --> Equimolar - The equimolar substances are defined as the substance which are…

Q: (b) do Using the reagents below, list in order (by letter, no period) those necessary to prepare…

A: b) We have to synthesize compound B from fluorene. The given options are Ethyne NaC=CH2 NaCCH NBS,…

Q: I meant to write 10^6, not 106. Also, where did 22.4 L of CO2 come from? Thank you!

Q: A pound of plain M&M candies contains 96g fat, 320g carbohydrate and 21g protein. What is the fuel…

Q: 2) If the BOD; of a waste is 220 mg/l and the ultimate BOD is 320 mg/1, what is the rate constant?

A: BOD -: it refers to biological oxygen demand. It is the actual requirement or demand of…

Q: Molecules with they lack the rigidity necessary for alignment. O only single and double bonds O only…

A: To solve this problem we have to fill in the blank and calculate the enthalpy of reaction .

Q: Draw a major resonance contributor of this enolate anion. Include all lone pairs in your structure.…

A: Given structure: We have to draw the major resonance contributor of this structure.

Q: using C) rystern in calicowing to structives Tranum, name the b) OcN N (113 (173 H مله ОСПЗ

A: These compounds are examples of the amides, ester and aromatic aldehydes respectively.

Q: Is this compound Polar? and Identify the geometry around each Carbon atom 1.linear 2.trigonal…

A: A compound is polar if it has non-zero net dipole moment.

Q: A 2.24 g sample of ammonium nitrate is added to 78.44 mL of water in a simple calorimeter. The…

A: It is an application of principle of calorimetry which used to measure the enthalpy of dissolution…

Q: c) OMe From

A: The Retrosynthesis of the following compound is given below

Q: Under constant-volume conditions of heat of combustion of glucose, C6H₁2O6, 1s 15.57 KJ/g. A 2.500-g…

A: Given : heat of combustion of glucose,C6H12O6…

Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

I need help learning how to do this please

10. Which one of the following 3 buffer systems is best
suited for keeping pH at 7 (-logKa = pka)?
a. HSO3-/SO32-
b. H2PO4- / HPO42-
c. HPO42-/ PO43-

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

A good buffer generally contains relatively equal concentrations of weak acid and conjugate base. If you wanted to buffer a solution at pH = 4.00 or pH = 10.00, how would you decide which weak acidconjugate base or weak baseconjugate acid pair to use? The second characteristic of a good buffer is good buffering capacity. What is the capacity of a buffer? How do the following buffers differ in capacity? How do they differ in pH? 0.01 M acetic acid/0.01 M sodium acetate 0.1 M acetic acid/0.1 M sodium acetate 1.0 M acetic acid/1.0 M sodium acetate
A best buffer has about equal quantities of weak acid and conjugate base present as well as having a large concentration of each species present. Explain.
Malonic acid (HO2CCH2CO2H) is a diprotic acid. In the titration of malonic acid w ith NaOH, stoichiometric points occur at pH = 3.9 and 8.8. A 25.00-mL sample of malonic acid of unknown concentration is titrated with 0.0984 M NaOH, requiring 31.50 mL of the NaOH solution to reach the phenolphthalein end point. Calculate the concentration of the initial malonic acid solution. (Sec Exercise 113.)
Cacodylic acid, (CH3)2AsO2H, is a toxic compound that is a weak acid with pKa = 6.19. It is used to prepare buffered solutions. Calculate the masses of cacodylic acid and sodium cacodylate that should be used to prepare 500.0 mL of a pH = 6.60 buffer so that the buffer has a total of arsenic-containing species equal to 0.25 M, that is, so that: [(CH3)2AsO2H] + [(CH3)2AsO2] = 0.25 M
When 40.00 mL of a weak monoprotic acid solution is titrated with 0.100-M NaOH, the equivalence point is reached when 35.00 mL base has been added. After 20.00 mL NaOH solution has been added, the titration mixture has a pH of 5.75. Calculate the ionization constant of the acid.
What mass of NH4Cl must be added to 0.750 L of a 0.100-M solution of NH3 to give a buffer solution with a pH of 9.26? (Him: Assume a negligible change in volume as the solid is added.)
Repeat the procedure in Exercise 61, but for the titration of 25.0 mL of 0.100 M pyridine with 0.100 M hydrochloric acid (Kb for pyridine is 1.7 109). Do not calculate the points at 24.9 and 25.1 mL.
A 0.210-g sample of an acid (molar mass = 192 g/mol) is titrated with 30.5 mL of 0.108 M NaOH to a phenolphthalein end point. Is the acid monoprotic, diprotic, or triprotic?
Phenolphthalein is a commonly used indicator that is colorless in the acidic form (pH 8.3) and pink in the base form (pH 10.0). It is a weak acid with a pKa of 8.7. What fraction is in the acid form when the acid color is apparent? What fraction is in the base form when the base color is apparent?
You want to prepare a pH 4.50 buffer using sodium acetate and glacial acetic acid. You have on hand 300. mL of 0.100-M sodium acetate. Calculate the mass in grams of glacial acetic acid (d = 1.05 g/mL) you should use to prepare the buffer.
A sodium hydrogen carbonate-sodium carbonate buffer is to be prepared with a pH of 9.40. (a) What must the [ HCO3 ]/[ CO32 ]ratio be? (b) How many moles of sodium hydrogen carbonate must be added to a liter of 0.225 M Na2CO3 to give this pH? (c) How many grams of sodium carbonate must be added to 475 mL of 0.336 M NaHCO3 to give this pH? (Assume no volume change.) (d) What volume of 0.200 M NaHCO3 must be added to 735 mL of a 0.139 M solution of Na2CO3 to give this pH? (Assume that volumes are additive.)