Question

Which substance is serving as a reducing agent in the following reaction?
$14H^{+}+C{r}_2{O}_7^{2-}+3Ni\to 2C{r}^{3+}+7H_{2}O+3N{i}^{2+}$

• A. $H_{2}O$
• B. $Ni$
• C. $H^{+}$
• D. $C{r}_2{O}_7^{2-}$

Answer 1

Answer: (B)

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