a. What is the pH of a buffer solution that is 0.18 M NH3 and 0.18 M NH? K₁ for NH3 is 1.8 x 10-5.pH =b. What is the pH if 41 mL of 0.13 M hydrochloric acid is added to 425 mL of this buffer?pH =

Answered: a. What is the pH of a buffer solution…

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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a. What is the pH of a buffer solution that is 0.18 M NH3 and 0.18 M NH? K₁ for NH3 is 1.8 x 10-5.
pH =
b. What is the pH if 41 mL of 0.13 M hydrochloric acid is added to 425 mL of this buffer?
pH =

Expert Solution

Step 1

a.) To calculate pH, we would use Henderson Hasselbalch equation.

b.) First we need to calculate moles of all species. Then hydrochloric acid will react with basic part of buffer, so we need to write a reaction and draw ICE table to calculate the equilibrium moles of all species.

Then we can use Henderson Hasselbalch equation to calculate pH.

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