Justifyi the statement that water behaves like an acid an also like base on the basis of protonic concept.

Explanation

1. `HCl(aq)+H_(2)O(aq)toH_(3)O^(+)(aq)+Cl^(-)(aq)`
2. `H_(2)O(l)+CO_(3)^(2-)(aq)toHCO_(3)^(-)(aq)+OH^(-)(aq)`
In the reaction(1) `H_(2)O` is behaving as a base whereas in equation (2) It is behaving as an acid. Such substances which can act as acids as well as bases are called amphoteric substances.