1.

When ammonia is heated with cupric oxide, a molecule of ammonia willA. gain 3 electronsB. lose 3 electronsC. gain 2 electronsD. lose 2 electrons

Answer» Correct Answer - B
`NH_3` reduces cupric oxide CuO to forming `N_2`.
`2NH_3 +3CuOto 3Cu+3H_2O+N_2uarr`
`2NH_3` molecules lose `6e^(-)`.
`therefore ` One `NH_3` will lose `3e^(-)`.


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