JEE Main 2024 Chemistry question
In the reaction of potassium dichromate, potassium chloride and sulfuric acid (conc.), the oxidation state of the chromium in the product is (+) .
Answer: 6
Solution
K₂Cr₂O₇ + KCl + H₂SO₄ → KHSO₄ + CrO₂Cl₂ + H₂O. The product is chromyl chloride, CrO₂Cl₂, in which chromium is in the +6 oxidation state.