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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).

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Answer:

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

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

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