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. What is the pH of a solution that contains 0.2 M HCN and 0.1 M Ba(CN),? The Ka for HCN is 6.2x10-10

. What is the pH of a solution that contains 0.2 M HCN and 0.1 M Ba(CN),? The Ka for HCN is 6.2x10-10

Chemistry
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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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?
Transcribed Image Text: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?
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