The oxidation state of chromium in the final product formed by the reaction between Kl and acidified potassium dichromate solution is `:`

Options

A. `+4`
B. `+6`
C. `+2`
D. `+3`

Answer

D

Explanation

`K_(2)Cr_(2)O_(7)+6KI+7H_(2)SO_(4)rarr4K_(2)SO_(4)+Cr_(2)(SO_(4))_(3)+7H_(2)O+3I_(2)`
`overset(.)Cr_(2)(SO_(4))_(3)rarr2overset(+3)(Cr)+3SO_(4)^(2-)`.