Question

Which of the following acids is the STRONGEST? The acid is followed by its Ka value. Which of the following acids is the STRONGEST? The acid is followed by its Ka value. HClO2, 1.1 × 10-2 HNO2, 4.6 × 10-4 HCN, 4.9 × 10-10 HF, 3.5 × 10-4 HCOOH, 1.8 × 10-4 SubmitRequest Answer

Answer 1

Answer:

$HClO_{2}$ is the strongest acid

Explanation:

$K_{a}$ of an acid represents acid dissociation constant.

For an acid HA: $HA\rightleftharpoons H^{+}+A^{-}$

                            $K_{a}=\frac{[H^{+}][A^{-}]}{[HA]}$

Therefore more the value of $K_{a}$ , more will be degree of dissociation of acid. Hence stronger will be the acid.

Among the all five acids, $HClO_{2}$ has highest  $K_{a}$ value. Therefore it represents, at equilibrium, $HClO_{2}$ has highest degree of dissociation.

Hence $HClO_{2}$ is the strongest acid