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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Step 1
The pH of a 0.3 M solution of NH4Br is to be calculated if Ka of NH4+ = 5.6×10-10
Step 2
In aqueous solution of NH4Br, it exists as NH4+ and Br- .
NH4+ is the conjugate acid of NH3 (a weak base), thus it will partially ionize in solution to give H3O+ and NH3.
Step 3
Let x M be the amount of NH4+ consumed.
0.3 M of NH4Br gives 0.3 M NH4+ and 0.3 M Br-.
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