1.

Which substance is serving as a reducing agent in the following reaction? 14H^(+)+Cr_(2)O_(7)^(2-)+3Ni rarr 2Cr^(3+)+7H_(2)O+3Ni^(2+)

Answer»

`H_(2)O`
`Ni`
`H^(+)`
`Cr_(2)O_(7)^(2-)`

ANSWER :B


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