Which substance serves as reducing agent in the following reaction? \[ – McqOptions

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1.	Which substance serves as reducing agent in the following reaction? \[14{{H}^{+}}+C{{r}_{2}}O_{7}^{2-}+3Ni\xrightarrow{{}}\] \[2C{{r}^{3+}}+7{{H}_{2}}O+3N{{i}^{2+}}\]
A.	\[{{H}_{2}}O\]
B.	Ni
C.	\[{{H}^{+}}\]
D.	\[C{{r}_{2}}O_{7}^{2-}\]
Answer» C. \[{{H}^{+}}\]

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