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The pK, value for H2 CO3 is 6.38. What mole ratio of KHCO3 to H2CO3 is needed to prepare a buffer with a pH of 6.77? [HCO;-] [H2 CO3]

The pK, value for H2 CO3 is 6.38. What mole ratio of KHCO3 to H2CO3 is needed to prepare a buffer with a pH of 6.77? [HCO;-] [H2 CO3]

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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The \( pK_a \) value for \( \text{H}_2\text{CO}_3 \) is \(\mathbf{6.38}\). What mole ratio of \( \text{KHCO}_3 \) to \( \text{H}_2\text{CO}_3 \) is needed to prepare a buffer with a pH of \(\mathbf{6.77}\)? \[ \frac{[\text{HCO}_3^-]}{[\text{H}_2\text{CO}_3]} = \text{[ ] } \]
Transcribed Image Text:The \( pK_a \) value for \( \text{H}_2\text{CO}_3 \) is \(\mathbf{6.38}\). What mole ratio of \( \text{KHCO}_3 \) to \( \text{H}_2\text{CO}_3 \) is needed to prepare a buffer with a pH of \(\mathbf{6.77}\)? \[ \frac{[\text{HCO}_3^-]}{[\text{H}_2\text{CO}_3]} = \text{[ ] } \]
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