Question

While diluting an acid,why is it recommended that the acid should be added to water and not water to the acid?

Answer 1

First, adding more acid releases more heat, as it is exothermic. If you add water to acid it forms an extremely concentrated solution of acid initially. So much heat is released that the solution may boil very violently, splashing concentrated acid out of the container and all this because the reaction is exothermic.

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Answer 2

Explanation:

Since the process of dissolving an acid in water is exothermic, it is always recommended that acid should be added to water. If it is done the other way, then it is possible that because of the large amount of heat generated, the mixture splashes out and causes burns.