MHT CET 2021 Chemistry Solved Paper

Water is amphoteric in nature i.e. it can acts as an acid as well as a base. It acts as an acid with NH3 and a base with H2S.
H2O+NH3⇌OH−+NH4+
H2O+H2S⇌H3O++HS−
The auto protolysis (self ionisation ) of water takes place as follows

H2O

acid

+

H2O

base

⇌H3O++OH−