Question

Potassium dichromate in acidic solution reacts with $F{e}^{2+}$ gives

• A. $C{r}^{3+}+n{H}_{2}O$
• B. $C{r}^{+}+n{H}_{2}O$
• C. $C{r}^{2+}+n{H}_{2}O$
• D. $C{r}^0+n{H}_{2}O$

Answer 1

Answer: (A)

Potassium dichromate in acidic solution reacts with $F{e}^{2+}$ gives $C{r}^{3+}$ and water.
$6F{e}^{2+}+2C{r}_2{O}_7^{2-}14H^{+}\to 6F{e}^{3+}+2C{r}^{3+}+7H_{2}O$