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An analytical chemist is titrating  145.6mL  of a  1.100M  solution of hydrazoic acid  HN3  with a  0.8100M  solution of  KOH . The  pKa  of hydrazoic acid is  4.72 . Calculate the pH of the acid solution after the chemist has added  236.7mL  of the  KOH  solution to it.

An analytical chemist is titrating  145.6mL  of a  1.100M  solution of hydrazoic acid  HN3  with a  0.8100M  solution of  KOH . The  pKa  of hydrazoic acid is  4.72 . Calculate the pH of the acid solution after the chemist has added  236.7mL  of the  KOH  solution to it.

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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An analytical chemist is titrating 

145.6mL

 of a 

1.100M

 solution of hydrazoic acid 

HN3

 with a 

0.8100M

 solution of 

KOH

. The 

pKa

 of hydrazoic acid is 

4.72

. Calculate the pH of the acid solution after the chemist has added 

236.7mL

 of the 

KOH

 solution to it.

 

Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of 

KOH

 solution added.

 

Round your answer to 

2

 decimal places.

 

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