How do I complete problem 3 in a step by step? 1. Which of the following would be effective buffers. (circle effective buffers)HCN/NACN desired pH=8.3 K, for HCN is 10-9.20.1 M HF and 0.8 M NaF0.2 М CН3СНООK and 0.1 M CHзCнОонHCIO2/NaCIO2 desired pH=5.3 Ka is 10-1.922. What is the pH of a solution that contains 0.2 M HCN and 0.1 M Ba(CN)2? The Ka for HCN is 6.2x10-103. What mass of NaA (MW=100 g/mole) must be added to a 100.0 ml of a 0.1 M solution of HA (Ka=1x10-5) to achieve a pH of 6.0?

Answered: 3. What mass of NaA (MW=100 g/mole)…

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter14: Equilibria In Acid-base Solutions

Section: Chapter Questions

Problem 25QAP: A sodium hydrogen carbonate-sodium carbonate buffer is to be prepared with a pH of 9.40. (a) What...

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How do I complete problem 3 in a step by step?

1. Which of the following would be effective buffers. (circle effective buffers)
HCN/NACN desired pH=8.3 K, for HCN is 10-9.2
0.1 M HF and 0.8 M NaF
0.2 М CН3СНООK and 0.1 M CHзCнОон
HCIO2/NaCIO2 desired pH=5.3 Ka is 10-1.92
2. What is the pH of a solution that contains 0.2 M HCN and 0.1 M Ba(CN)2? The Ka for HCN is 6.2x10-10
3. What mass of NaA (MW=100 g/mole) must be added to a 100.0 ml of a 0.1 M solution of HA (Ka=1x10-5) to achieve a pH of 6.0?

Expert Solution

Step 1

Buffer solution:

The solution that resists the change in pH is known as a buffer solution. The buffer solution is an aqueous solution consisting of a mixture of a weak acid and its conjugate base, or vice versa. It resists the pH changes when a small amount of strong acid or base is added to it.

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