Answer
C
Work Step by Step
Acids with the stronger conjugate base have the lowest Ka:
Ka's:
HNO2: $4.5\times10^{-4}$
HCN: $4.0\times10^{-10}$
Chemistry and Chemical Reactivity (9th Edition)
by Kotz, John C.; Treichel, Paul M.; Townsend, John R.; Treichel, David A.
Published by
Cengage Learning
ISBN 10:
1133949649
ISBN 13:
978-1-13394-964-0
Chapter 16 Principles of Chemical Reactivity: The Chemistry of Acids and Bases - 16-3 Equilibrium Constants for Acids and Bases - Review & Check for Section 16-3 - Page 598: 2
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