QUESTION 8Of the following solutions, which has the lowest buffering capacity?A. 0.521M HC2H302 and 0.217M NaC2H3O2B. 0.365M HC2H3O2 and 0.497M NaC2H3O2C. 0.821M HC2H302 and 0.713M NaC2H3O2D. 0.121M HC2H3O2 and 0.116M NaC2H302O E. They are all buffer solutions and would all have the same capacity.

Of the following solutions, which has the lowest buffering capacity? OA. 0.521M HC2H3O2 and 0.217M NaC2H302 B.0.365M HC2H3O2 and 0.497M NaC2H302 C.0.821M HC2H302 and 0.713M NaC2H302 O D.O.121M HC2H3O2 and 0.116M NaC2H302 O E. They are all buffer solutions and would all have the same capacity.

Of the following solutions, which has the lowest buffering capacity? OA. 0.521M HC2H3O2 and 0.217M NaC2H302 B.0.365M HC2H3O2 and 0.497M NaC2H302 C.0.821M HC2H302 and 0.713M NaC2H302 O D.O.121M HC2H3O2 and 0.116M NaC2H302 O E. They are all buffer solutions and would all have the same capacity.

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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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.

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Calculate the pH of a buffer that is 0.225 M HC 2H 30 2 and 0.162 M KC 2H 30 2. The K a for HC 2H 30 2 is 1.8 x 10 . A. 9.11 B. 4.89 C. 9.26 D. 4.60 E. 4.74
Which of the following solutions (A or B) has the greatest buffering capacity a Solution A: 5.0 M HCl and 5.0 M NaCl Solution B: 5.0 M HF and 5.0 M NaF b. Solution A: 1.0 M HCN and 1.0 M NaCN Solution B: 0.10 M HCN and 0.10 M NaCN
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Buffer Intensity?
Choose the letter of the correct answer: 1. Which of the following salts will produce a basic solution upon hydrolysis?a. NH4NO3b. K2SO4c. NaC6H5COOd. NH4ClO4 2. What buffer pH can be prepared from an arbitrary weak acid whose pKa is 7.20?a. pH 8.30b. pH 6.40c. pH 2.80d. pH 5.80 3. All salts are products of neutralization reactions between an acid and a base. Thus, all salts form a neutral solution when dissolved.a. Trueb. False 4. Which source of error will cause an increase in buffer capacity during determination?a. Higher volume of the buffer was usedb. pH meter was read prematurely, resulting to a larger pH changec. Large amounts of the NaOH was added to the buffer with minimal pH changed. Large amounts of water was accidentally spilled into the buffer 5. Ions that are derived from strong acids and bases, which neither has acid nor base propertiesa. Hydrolyzable ionsb. Acidic/Basic ionsc. Spectator ionsd. Neutralizer ions
Consider a dihydrogen phosphate buffer at pH = 7.20. Which species would react if an external base , OH- were added? a. H2PO4- b. H3PO4 c. HPO4^2- d. PO4^3-
4) A buffer solution is made from 135 mL of 0.395 M in HC2H3O2 and 115 mL 0.345 M NaC2H3O2 (the Ka of acetic acid is 1.79 x 10-5). a. Determine the pH of the initial buffer solution. b. What is the buffering range of this solution? c. What is the buffering capacity of this solution? d. What is the maximum volume of 2.00 M HCl solution you can add this buffer before it is no longer effective?
2. Which of the following will NOT work as a buffer pair? A. ΝH3/ΝH4Br B. HBr/KBr C. HCIO/NaCio D. CH3COOH/NaCH3COO
QUESTION 4 Of the following solutions, which has the lowest buffering capacity? OA.0.212M HF and 0.667M NaF OB. 0.821M HF and 0.217M NaF OC. 0.821M HF and 0.909M NaF OD. They are all buffer solutions and would all have the same capacity. OE. 0.100M HF and 0.217M NaF
17. Determine the pH of the resulting solutions when the following reagents are mixed. a. 20.00mL of 0.2500M HCI mixed with 35.00mL of 0.2250M NaOH b. 18.00mL of 0.3500M HC2H;O2 mixed with 15.00mL of 0.3000M NaOH 22.50mL of 0.2000M NH, mixed with 25.00mL of 0.1000M HCI d. 25.00mL of 0.1000M HCIO, mixed with 25.00mL of 0.1000M KOH e. 15.00mL of 0.1000M CH3NH2 mixed with 25.00mL of 0.1500M HCI
2. Which one of the following is a buffer solution? a. 0.40 M HCN and 0.10 KCN b. 0.20 M СH;COОН c. 1.0 M HNO3 and 1.0 M NANO3 d. 0.10 M KCN с. e. 0.50 M HCl and 0.10 NaCl Why? (Be specific! Also explain why the other 4 choices are NOT buffer solutions.)