Question

Read the given statements carefully.
(a) 1 M hydrochloric acid and 1 M acetic acid produce different amounts of hydrogen ions
(b) On the pH scale we can measure pH from 1 (very basic) to 14 (very acidic)
(c) Higher the hydronium ion concentration lower is the pH value.

The incorrect statement(s) is/are :

• A. Only (a)
• B. (b) and (c)
• C. Only (b)
• D. (a) and (b)

Answer 1

The correct option is C Only (b)

A scale for measuring hydrogen ion concentration in a solution is known as the pH scale. On the pH scale we can measure pH generally from 0 (very acidic) to 14 (very basic). Higher the hydronium ion concentration, lower is the pH value.

Hydrochloric acid is a strong acid whereas acetic acid is a weak acid. Therefore, 1 M hydrochloric acid and 1 M acetic acid produce different amounts of hydrogen ions.

Hence, the correct answer is option (c)