Question

Which one of the following reactions is an exothermic reaction?

A) Dissolution of potassium nitrate with water.

B) Dissolution of quicklime in water

C) Melting of ice cubes

D) Decomposition of calcium carbonate​

Answer 1

Answer:

The "reaction of water" with quick lime forms calcium hydroxide and "releases a lot of heat" energy, so it is exothermic reaction. Dilution of acid by adding water to concentrated acid releases a lot of heat energy, so it is exothermic reaction

Explanation:

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