Use the Following Acid Ionization Constants to Identify the Correct

Multiple Choice

Use the following acid ionization constants to identify the correct decreasing order of base strengths for the conjugate bases. HF
K_a  7.2  10^4
HNO₂
K_a  4.5  10^4
HCN
K_a  6.2  10^10

A) CN^  NO₂^  F^
B) NO₂^  F^  CN^
C) F^  CN^  NO₂^
D) F^  NO₂^  CN^
E) NO₂^  CN^  F^