Question

The molecular formula of potassium dichromate is:

• A. $K_{2}Cr{O}_3$
• B. $K_{2}C{r}_2{O}_7$
• C. $K_{2}Cr{O}_4$
• D. none of the above

Answer 1

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

The molecular formula of potassium dichromate is $K_{2}C{r}_2{O}_7$. Dichromate ion is $C{r}_2{O}_7^{2-}$. The molecular formula of potassium chromate is $K_{2}Cr{O}_4$.