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Item 14: Question Calculate the pH of a solution prepared by dissolving 2.129 g of solid anhydrous Na₂HPO4 (fw, 141.98) in about 50 mL of water, adding 1.000 mL of 6.00 M HNO3, and diluting the mixture with water to 100.0 mL. The stepwise acid dissociation constants for phosphoric acid are 7.11 x 10-³, 6.32 x 10-8, and 7.1 x 10-¹3. Assume the activity coefficients are equal to 1.00. 7.02 7.38 9.85 12.32

Item 14: Question Calculate the pH of a solution prepared by dissolving 2.129 g of solid anhydrous Na₂HPO4 (fw, 141.98) in about 50 mL of water, adding 1.000 mL of 6.00 M HNO3, and diluting the mixture with water to 100.0 mL. The stepwise acid dissociation constants for phosphoric acid are 7.11 x 10-³, 6.32 x 10-8, and 7.1 x 10-¹3. Assume the activity coefficients are equal to 1.00. 7.02 7.38 9.85 12.32

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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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14. How would you set up a pH problem such as this... then solve the following...

Item 14: Question Calculate the pH of a solution prepared by dissolving 2.129 g of solid anhydrous Na₂HPO4 (fw, 141.98) in about 50 mL of water, adding 1.000 mL of 6.00 M HNO3, and diluting the mixture with water to 100.0 mL. The stepwise acid dissociation constants for phosphoric acid are 7.11 × 10-³, 6.32 x 10-8, and 7.1 x 10-¹³. Assume the activity coefficients are equal to 1.00. 7.02 7.38 9.85 12.32
Transcribed Image Text:Item 14: Question Calculate the pH of a solution prepared by dissolving 2.129 g of solid anhydrous Na₂HPO4 (fw, 141.98) in about 50 mL of water, adding 1.000 mL of 6.00 M HNO3, and diluting the mixture with water to 100.0 mL. The stepwise acid dissociation constants for phosphoric acid are 7.11 × 10-³, 6.32 x 10-8, and 7.1 x 10-¹³. Assume the activity coefficients are equal to 1.00. 7.02 7.38 9.85 12.32
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