Question

Water is well known amphoprotic solvent. In which chemical
reaction water is behaving as a base?
(a) H₂SO₄ + H₂O → H₃O⁺ + HSO₄⁻
(b) H₂O + H₂O → H₃O⁺ + OH⁻
(c) H₂O+ NH₂⁻ → NH₃ +OH⁻
(d) H₂O NH₃ → NH₄⁺ + OH⁻

Answer 1

Explanation:

The oxygen atom in the water molecule has two lone pairs, one of which could be used to form a bond with a \(H^+\(, and, therefore, the water molecule could act as a base in a reaction. Since water has the potential to act both as an acid and as a base, water is amphoteric.

Answer 2

Explanation:

Water is well known amphoprotic solvent. In which chemical

reaction water is behaving as a base?

(a) H₂SO₄ + H₂O → H₃O⁺ + HSO₄⁻

(b) H₂O + H₂O → H₃O⁺ + OH⁻

(c) H₂O+ NH₂⁻ → NH₃ +OH⁻✔️

(d) H₂O NH₃ → NH₄⁺ + OH⁻