Question

The cooling of concentrated solution of F.A.S. is always done slowly....​

Answer 1

Answer:

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. ... So it is always safer to add acid to water, and not water to acid

Answer 2

Answer:

If you add water to acid it forms an extremely

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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. So it is always safer to add acid to water, and not water to acid.