Suppose you wanted to make a buffer of exactly pH 7.00 using KH₂PO4 and Na₂HPO4. If the final solution was 0.21 M in KH₂PO4, what concentration of Na₂HPO4 would you need? (pKa for H3PO4, H₂PO4, and HPO2 are 2.14, 6.86, and 12.40, respectively.) Express your answer to two significant figures.

Suppose you wanted to make a buffer of exactly pH 7.00 using KH₂PO4 and Na₂HPO4. If the final solution was 0.21 M in KH₂PO4, what concentration of Na₂HPO4 would you need? (pKa for H3PO4, H₂PO4, and HPO2 are 2.14, 6.86, and 12.40, respectively.) Express your answer to two significant figures.

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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