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  4. Which substance is serving as a reducing agent in the following reaction? 14 H ++ Cr 2 O 72-+3 Ni arrow 2 Cr 3++7 H 2 O +3 Ni 2+

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Q. Which substance is serving as a reducing agent in the following reaction?
$14 H ^{+}+ Cr _{2} O _{7}^{2-}+3 Ni \rightarrow 2 Cr ^{3+}+7 H _{2} O +3 Ni ^{2+}$

Redox Reactions

Solution:

image

i.e., $Ni$ acts as a reducing agent.