Question

The ionisation constant of an acid, Kₐ, is the
measure of strength of an acid. The Kₐ values of
acetic acid, hypochlorous acid and formic acid
are 1.74 × 10⁻⁵, 3.0 × 10⁻⁸ and 1.8 × 10⁻⁴
respectively. Which of the following orders of
pH of 0.1 mol dm⁻³ solutions of these acids is correct?
(a) acetic acid > hypochlorous acid > formic acid
(b) hypochlorous acid > acetic acid > formic acid
(c) formic acid > hypochlorous acid > acetic acid
(d) formic acid > acetic acid > hypochlorous acid

Answer 1

Answer:

Option a) is correct.

Explanation:

Option a) acetic acid>hydrochlorous acid>formic acid is the correct answer.It is because these all are arranged in their increasing acidic properties and behaviour.

Answer 2

Answer:

a)acetic acis>hypochlorous acid>formic acid