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  4. For the redox reaction Cr2O-27 + H+ + Ni → Cr3+ + Ni2+ + H2O The correct coefficients of the reactants for the balanced reaction are Cr2O2-7 Ni H+ a 1 3 14 b 2 3 14 c 1 1 16 d 3 3 12

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Q. For the redox reaction
$Cr_{2}O^{-2}_{7} + H^{+} + Ni \to Cr^{3+} + Ni^{2+} + H_{2}O$ The correct coefficients of the reactants for the balanced reaction are
$Cr_{2}O^{2-}_{7}$ Ni $H^{+}$
a 1 3 14
b 2 3 14
c 1 1 16
d 3 3 12

Redox Reactions

Solution:

The balanced equation is
$Cr_{2} O^{2-}_{7}+ 14H^{+} + 3Ni \to 2Cr^{3+} + 7H_{2}O + 3Ni^{2+}$