Question

What would happen when a solution of potassium chromate is treated with an excess of dilute HNO₃?

• A. $Cr_{2}O_{7}^{2 -}$and H₂O are formed
• B. $CrO_{4}^{2 -}$is reduced to +3 state of Cr
• C. $CrO_{4}^{2 -}$is oxidized to +7 state of Cr
• D. Cr³⁺ and $Cr_{2}O_{7}^{2 -}$are formed

Answer 1

Answer: (A)

$Cr_{2}O_{7}^{2 -}$and H₂O are formed

Answer 2