1. How many grams of sodium hyrogen phosphate and sodium dihydrogen phosphate are needed to make100 mL of a 0.01M phosphate buffer at pH 7.2. The Ka for dihydrogen phosphate is 1.38 x 10-72. What is the pH of a solution when 10 ml of 0.1M HCI is added to 100 mL of a pH = 7.2, 0.1Mphosphate buffer?3. What is the pH of a solution when 10 mL of 0.1M HCI is added to 100 ml of water?

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How many grams of hyrogen phosphate and Sodil dinydrogen phosphate are heeded to make 100 mL of a 0.01M phosphate buffer at pH 7.2. The Ka for dihydrogen phosphate is 1.38 x 10-7

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

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Question

1. How many grams of sodium hyrogen phosphate and sodium dihydrogen phosphate are needed to make
100 mL of a 0.01M phosphate buffer at pH 7.2. The Ka for dihydrogen phosphate is 1.38 x 10-7
2. What is the pH of a solution when 10 ml of 0.1M HCI is added to 100 mL of a pH = 7.2, 0.1M
phosphate buffer?
3. What is the pH of a solution when 10 mL of 0.1M HCI is added to 100 ml of water?

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