Question

The yellow colored solution of chromate salt changes to orange colour on acidification due to the formation of

• A. $C{r}^{3+}$
• B. $C{r}_2{O}_7^{2-}$
• C. $Ti{O}_4^{-}$
• D. $C{r}_2{O}_3$

Answer 1

The correct option is B $C{r}_2{O}_7^{2-}$

$2Cr{O}_4^{2-}+2H^{+}\underset{Alkali}{\overset{Acid}{\to }}C{r}_2{O}_7^{2-}+H_{2}O$