1.

In the reaction :HCN+H_(2)O hArr H_(3)O^(+)+CN^(-)the conjugate acid - base pair is

Answer»

1. `HCN, H_(3)O^(+)`
2. `HCN,CN^(-)`
3. `H_(2)O, CN^(-)`
4. `CN^(-), H_(3)O^(+)`

Answer :B


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