question_answer

What would happen when a solution of potassium chromate is treated with an excess of dilute nitric acid [AIEEE 2003]

A) \[C{{r}^{3+}}\] and \[C{{r}_{2}}O_{7}^{2-}\] are formed

B) \[C{{r}_{2}}O_{7}^{2-}\]and \[{{H}_{2}}O\] are formed

C) \[CrO_{4}^{2-}\] is reduced to \[+3\] state of \[Cr\]

D) \[CrO_{4}^{2-}\] is oxidized to \[+7\] state of \[Cr\]