Which of the following statements is wrong ?

Options

A. An acidified solution of `K_(2)Cr_(2)O_(7)` liberates iodine form iodides.
B. In acidic solution dichromate ions are converted to chromate ions.
C. Ammonium dichromate on heating undergo exothermic decomposition to give `Cr_(2)O_(3)`.
D. Potassium dichromate is used as a titrant for `Fe^(2+)` ions

Answer

B

Explanation

In acidic solution, chromate is converted to dichromate.
`2CrO_(4)^(2-) + 2H^(+) rarr Cr_(2)O_(7)^(2-) + H_(2)O`