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

Which substance serves as a reducing agent in the following reactions

1.	Which substance serves as a reducing agent in the following reactions ? 14H^(+) +Cr_(2)O_(7)^(2-) +3Ni rarr 2Cr^(3+) + 7H_(2)O+3Ni^(2+),
Answer» `H_2O` `O_2` `H^+` `Cr_2O_7^(2-)` Solution :`underset("R.A")overset(0)(Ni)+Ni^(2+)`