3) An undergraduate student is making 1.5 L of a 1.5 M potassium phosphate buffer solution with a pH = 6.1 (pKa of H2PO, is 7.21) using 3 M KH;PO, and 3 M K2HPO4. How many milliliters of 3M K2HPO, will be needed to make this solution? %3D

3) An undergraduate student is making 1.5 L of a 1.5 M potassium phosphate buffer solution with a pH = 6.1 (pKa of H2PO, is 7.21) using 3 M KH;PO, and 3 M K2HPO4. How many milliliters of 3M K2HPO, will be needed to make this solution? %3D

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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Question

Number 3

1) What is thei when pH=7.83?
2) A weak acid has a K= 6.62 x 10-5. What is the pH of a solution of this acid that is 2.65 M?
3) An undergraduate student is making 1.5 L of a 1.5 M potassium phosphate buffer solution
with a pH = 6.1 (pKa of H2PO4 is 7.21) using 3 M KH2PO4 and 3 M K,HPO4. How many
%3D
milliliters of 3 M K;HPO, will be needed to make this solution?

Expert Solution

Step 1

A buffer is a solution which resist any change in pH on adding a small amount of acid or base .

it is made up of weak acid and its conjugate salt or weak base and its conjugate salt.

Step by step

Solved in 3 steps with 1 images

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