Question

The colour of $K_{2}Cr_{2}O_{7}$ changes from red orange to lemon yellow on treatment with aqueous $KOH$ because of.

• A. The reduction of $Cr^{VI}$ to $Cr^{III}$
• B. The formation of chromium hydroxide
• C. The conversion of dichromate to chromate
• D. The oxidation of potassium hydroxide to potassium peroxide

Answer 1

Answer: (C)

The conversion of dichromate to chromate

Answer 2

The conversion of dichromate to chromate.