Sample student prepares three buffer solutions. Each solution is 1.0 M inone of the acids in the table and 1.0 M in its corresponding sodium salt.Which of the solutions has the greatest buffer capacity with respect toadded NaOH and why?H.H.CIH CH-C-CH-CC=C0-HH.0-H0-HBenzoic AcidChloroacetic AcidFormic AcidKapKa6.2 x 10-54.2114 x 10-32.861.8 x 103.75The formic acid buffer because it donates both of its hydrogen atomsThe chloroacetic acld buffer becauseitis the strongest acidAll are the sameThe benzolc acd butfer because lis testongestecid

When NaOH is added to the the buffer solutions , it will react with acidic part of buffer. So the…

Sample student prepares three buffer solutions. Each solution is 1.0 M in one of the acids in the table and 1.0 M in its corresponding sodium salt. Which of the solutions has the greatest buffer capacity with respect to added NAOH and why? H. H. CI H-C H-C- H-C C=C 0-H H. 0-H 0-H H. H. Benzoic Acid Chloroacetic Acid Formic Acid Ka pKa 6.2 x 10-5 14 x 10-3 2.86 1.8 x 104 3.75 4.21 The formic acid buffer because it donates both of its hydrogen atoms The chloroacetic acid buffer because itis the strongest acid All are the same The benzoic acd butfer becatse ltis testrongestacid

Sample student prepares three buffer solutions. Each solution is 1.0 M in one of the acids in the table and 1.0 M in its corresponding sodium salt. Which of the solutions has the greatest buffer capacity with respect to added NAOH and why? H. H. CI H-C H-C- H-C C=C 0-H H. 0-H 0-H H. H. Benzoic Acid Chloroacetic Acid Formic Acid Ka pKa 6.2 x 10-5 14 x 10-3 2.86 1.8 x 104 3.75 4.21 The formic acid buffer because it donates both of its hydrogen atoms The chloroacetic acid buffer because itis the strongest acid All are the same The benzoic acd butfer becatse ltis testrongestacid

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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The pH of a buffer is higher than the pH at which it would have the greatest buffering capacity in both directions. In which direction would the buffer have a larger buffering capacity? O Against the addition of an base O Against the addition of an acid
Is the following solution a buffer? Each solution was prepared by mixing and diluting appropriate quantities of the two solutes to yield the concentrations indicated. 0.10 M NaCN and 0.10 M NaCl a.yesb.no
4. Consider a buffer made by adding 0.050 mol NaC2H302 and 0.040 mol HC2H3O2 to a liter of water. a) What is the pH of this buffer? b) What is the pH after addition of 0.010 mol NaOH? c) What is the pH after addition of 0.010 mol HCI to the original buffer solution?
4. A student titrates 20.0 ml of an acid solution with 0.500 M NaOH and gets the graph shown below. Determine the concentration of the acid. 2 14.0 13.0 12.0 1.0 5.0 3.0 2.0 00 Titration: pH vs. Volume of Strong Base 2.0 SO Volume of Base Added (ml) 8.0 5. From the graph given in the previous question, determine the pKa of the acid used in the titration. Which of the following acids (hypobromous-HBrO, Formic-HCHO2, Hypochlorus-HCIO, or Periodic-HIO4, or Hydroiodic-HI) is the acid used? Explain how you know. 1.0.0 703
Which of the following solutions is a good buffer system? A) a solution thats is 0.10 M HNO2 and 0.10 M NaNO2 B) a solution that is 0.10 M NaOH and 0.10 M HNO3 C) a solution that is 0.10 M NaCl and 0.10 M HCI D) a solution that us 0.10 M HCN and 0.10 M HCI
Is the following solution a buffer? Each solution was prepared by mixing and diluting appropriate quantities of the two solutes to yield the concentrations indicated. 0.10 M NH3 and 0.10 M NH4Br a.yesb.no
1. Explain how a buffer made of hydrofluoric acid (0.20M) and fluoride ion (0.20M) adjusts to a small amount of added NaOH. 2. Calculate the amount of 0.1M NaOH that must be added to destroy the buffer solution from question 1.
7.Of the following solutions, which has the greatest buffering capacity? A. 0.205 M HF and 0.133 M NaF B. 0.135 M HF and 8.78×10−2 M NaF C. 0.409 M HF and 0.266 M NaF D. 0.818 M HF and 0.532 M NaF E.They are all buffer solutions and would all have the same capacity.
7. A solution was made by mixing 50.0 mL of 0.750 M HCN with 25.0 mL of water. What is the pH of this solution? The pka of HCN = 9.31. 8. One of the compounds featured on the TV series "Breaking Bad" was hydrofluoric acid (HF), pKa = 3.14. a) A solution of HF has a pH = 1.77. What was the initial [HF] for this solution in mol L-1? b) What is the equilibrium concentration of F in this solution in mol L-1? c) What is the percent ionization of HF in this solution?
Which of the following solutions, when mixed in equal volumes, will create a reasonably effective buffer solution? Select one or more: 0.100 M NaCl and 0.100 M HCl 0.100 M HCl and 0.200 M NO2- 0.100 M NaOH and 0.200 M CH3COOH 0.200 M NaOH and 0.100 M HCOOH 0.100 M HCOOH and 0.100 M HCOO- 0.100 M HCl and 0.100 M NaOH
Which of the options below correctly describes what happens when a small amount of strong base is added to a buffer solution consisting of the weak acid HA its conjugate base A-? Oa. The concentration of H* increases and the pOH decreases. Ob. The concentration of H* increases and the pOH remains the same. Oc. The concentration of Ht decreases and the pOH decreases. Od. The concentration of H* remains the same and the pOH remains the same. Oe. The concentration of H* remains the same and the pOH increases.
bläs 4 Predict whether each of the following pairs of substances could function as a buffer system in aqueous solution. Explain why? a. HCl and NaCI b. HCN and KCN c. HCI and HCN d. NACN and * KCN