Question

what happens when crystals if copper sulphate r put into water?

Answer 1

it turns bluish in colour after dissolving.

Answer 2

Hey mate, here is your answer :
The white solid turns blue in the presence of water. The backward reaction is exothermic - energy is transferred to the surroundings when ithappens. ... When water is added to anhydrous copper sulfate, enough heat is released to make the water bubble and boil.