Question

Why should we add concentrated acid to water and not water to acid?

Answer 1

because adding the con. acid to water is highly exothermic while addind water to con.is highly endothermic it may produce heat in high quantity ehich can damage our beaker also also can damage us.

Answer 2

When you mix acid with water, it's extremely important to add the acid to the water rather than the other way around. This is because acid and water react in a vigorous exothermic reaction, releasing heat, sometimes boiling the liquid.