Answer
pH = 10.7
Work Step by Step
CN- + H20 -- NaOH + HCN
Kb = [NaOH][HCN] / [NaCN]
0.000021 = [x][x] / 0.01M
x = 0.00046
pOH = -log(OH)
pOH = -log(0.00046)
pOH = 3.3
pH + 3.3 = 14
Chemistry (12th Edition)
by Wilbraham
Published by
Prentice Hall
ISBN 10:
0132525763
ISBN 13:
978-0-13252-576-3
Chapter 19 - Acids, Bases, and Salts - 19 Assessment - Page 687: 109
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