Question

In the reaction $2Cr+3N{i}^{2+}\to 3Ni+2C{r}^{3+}$, the species oxidized is:

• A. $Cr$
• B. $N{i}^{2+}$
• C. $C{r}^{3+}$
• D. $Ni$
• E. none of the above

Answer 1

The correct option is A $Cr$

Loss of electrons is oxidation. In reaction $Cr$ is loosing electrons to form $C{r}^{3+}$ while $N{i}^{2+}$ gains 2 electrons to form $Ni$. Therefore $Cr$ is oxidized while $N{i}^{2+}$ is reduced in the reaction.