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

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Chapter 2

NCERT

Class 10

Science

Solutions

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

Question:

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

Answer:

When acid is mixed with water, a lot of heat is generated. Thus, the acid should always be added to the water slowly and with continuous stirring. On adding water to the concentrated acid, the heat generated may cause the mixture to spill and can burn the person. Therefore, utmost care should be taken while adding concentrated nitric acid or sulfuric acid to water.

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