Q.

The process of dissolving an acid or a base in water is a highly -

A. Exothermic reaction
B. Endothermic reaction
C. Sublimation reaction
D. Redux reaction
Answer» A. Exothermic reaction
Explanation: The process of dissolving an acid or a base in water is a highly exothermic one. This is why care must be taken while mixing concentrated nitric acid or sulphuric acid with water.
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