Question

HS- is amphoteric; it can behave as either an acid or a base.

Prove that HS- is an amphoteric. (You need to write two equations).

Answer 1

HS+Na=>NaS+1/2H2(here HS- acts as an acid)

HS-. + HCl=> H2S(g)+ Cl-(here HS- acts as a base)