Question

Which among the following salts dissolves in water with the absorption of heat?

विकल्प

• Na₂SO₄

• СaCl₂

• Li₂SO₄.H₂О

• KCl

Answer 1

KCl

Explanation:

Dissolution of Na2SO4, CaCl2 and Li2SO4·H2O in water is an exothermic process, while dissolution of KCl in water is an endothermic process.