Question

Heat is evolved when water is added to concentrated sulphuric acid and quick lime,out of these why one is a physical change and other is a chemical change

Answer 1

Because when we add water to sulfhuric acid ,the result is that before and after the property of sulfhuric acid is same so it is a physical change
Whereas when we add water to quick lime then lime water lime stone is formed which is irreversible so it is a chemical change.

Hope you understand.

Answer 2

Answer:

• Whereas when we add water to quick lime then lime water lime stone is formed which is irreversible so it is a chemical change