Question

why diluting a acid why is it recommended back the acid should be added to water and not water to the acid​

Answer 1

Explanation:-

Acids :- Those substances which releases hydrogen ion when dissociate in their aqueous solution is called acids.

Example:-

Sulphuric acid, nitric acid, hydrochloric acid etc.

Dilution of Acids :-

Dilution :- It is the process of making the substance more aqueous by adding water in to it is called dilution.

During dilution it is recommended to add acids in to water not water to acids because dilution of acids is highly exothermic reaction if we add water to acids a large amount of heat is evolved and it may cause splash to beaker and may burn the observer.

By adding acids in to water drop by drop release small amount of heat which is absorbed by water.

Answer 2

Answer:

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While diluting an acid it is recommended that the acid should be added to water and not water to the acid because if water is added to concentrated acid to dilute it, then a large amount of heat is evolved at once. This heat changes some of the water to steam explosively which can splash the acid on one’s face or clothes and cause acid burns.