The following monoprotic acids have the indicated acid-dissociation constants at 25 °C

CHEMISTRY · Subjective · A Level · Chemistry · Acids and bases · Acids and bases

Problem

The following monoprotic acids have the indicated acid-dissociation constants at 25 °C. • HCN,

K_a = 4.9\times10^{-10}

• HF,

K_a = 7.2\times10^{-4}

• CH

_3

COOH,

K_a = 1.8\times10^{-5}

Rank the three substances from strongest acid to weakest acid. Write your answer using the format “strongest > … > weakest.”