Which equation represents a neutralization reaction?

A) 6HC1O - > 4HCL + 2HCLO3

B) CH4 + 2O2->CO2+2H20

C) Ca (OH) 2+H2SO4->CaSO4+2H2O

D) Ba (OH) 2+Cu (NO3) 2->Ba (NO3) 2+Cu (OH) 2

C) Ca (OH) ₂ + H₂SO₄ → CaSO₄ + 2H₂O

Explanation:

Neutralization reaction:

When an acid and base react they form water and salt. The reaction is called neutralization reaction.

General equation:

HX + BOH → BX + H₂O

From given reaction equations only option C is correct because only this reaction gives salt and water.

Chemical equation:

Ca (OH) ₂ + H₂SO₄ → CaSO₄ + 2H₂O

Calcium hydroxide is acting as a base. Sulfuric acid is an acid. Both these reactants react to form salt which is calcium sulfate and water.

Calcium hydroxide dissociate to gives Ca²⁺ ion and OH⁻ while H₂SO₄ dissociate to gives H⁺ and SO₄²⁻. Ca²⁺ and SO₄²⁻ react to form salt CaSO₄ while OH⁻ and H⁺ form water.

Answer:Ba (OH) 2+Cu (NO3) 2->Ba (NO3) 2+Cu (OH) 2