A buffer solution containing only 0.050 mol of CH3NH2 and 0.060 mol of CH3NH= has a total volume of 500 mL. What is the pH after the addition of 0.020 mol of so NaOH to this buffer? Kb (CH3NH2) = 4.2 x 10-4 %3D O 11.05 10.62 O 12.60 10.19 10.87

A buffer solution containing only 0.050 mol of CH3NH2 and 0.060 mol of CH3NH= has a total volume of 500 mL. What is the pH after the addition of 0.020 mol of so NaOH to this buffer? Kb (CH3NH2) = 4.2 x 10-4 %3D O 11.05 10.62 O 12.60 10.19 10.87

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter15: Complex Acid/base Systems

Section: Chapter Questions

Problem 15.22QAP

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Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

A buffer solution containing only 0.050 mol of CH3NH2 and 0.060 mol of CH3
has a total volume of 500 mL. What is the pH after the addition of 0.020 mol of solid
NaOH to this buffer?
Kb (CH3NH2) = 4.2 × 10-4
11.05
10.62
12.60
10.19
10.87

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