Question

An acid which furnish three hydronium ions per molecule is-

• A. Sulphuric acid
• B. sulphurous acid
• C. Phosphoric acid
• D. Nitric acid

Answer 1

The correct option is C

Phosphoric acid

An acid that furnishes three hydronium ions (H⁺) per molecule should have three hydrogen atoms to release.

Explanation for correct option (c): Phosphoric acid

The formula of phosphoric acid is H₃PO₄. Thus, it can furnish three hydronium ions per molecule.

Explanation for incorrect options:

(a) The formula of sulphuric acid is H₂SO₄. Thus, it can furnish only two hydronium ions per molecule.

(b) The formula of sulphurous acid is H₂SO₃. Thus, it can release only two hydronium ions per molecule.

(d) The formula of nitric acid is HNO₃. Thus, it can furnish only one hydronium ion per molecule.

Hence, the correct answer is option (C) Phosphoric acid