0.336 M CH3NH3Br and 0.344 M CH3NH2 (methylamine). Determine the pH change when 0.078 mol NaOH is added to 1.00 L of the buffer. pH after addition − pH before addition = pH change =    2) Determine the pH change when 0.104 mol KOH is added to 1.00 L of a buffer solution that is 0.423 M in CH3COOH and 0.310 M in CH3COO-. pH after addition − pH before addition = pH change =

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter15: Additional Aqueous Equilibria
Section: Chapter Questions
Problem 85QRT: A buffer solution was prepared by adding 4.95 g sodium acetate to 250. mL of 0.150-M acetic...
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1) A buffer solution contains 0.336 M CH3NH3Br and 0.344 M CH3NH2 (methylamine). Determine the pH change when 0.078 mol NaOH is added to 1.00 L of the buffer.

pH after addition − pH before addition = pH change = 

 

2) Determine the pH change when 0.104 mol KOH is added to 1.00 L of a buffer solution that is 0.423 M in CH3COOH and 0.310 M in CH3COO-.

pH after addition − pH before addition = pH change = 

 

 

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