Question

What happens when potassium iodide reacts with acidic solution of potassium dichromate?

• A. It liberates iodine.
• B. Potassium sulphate is formed.
• C. Chromium sulphate is formed.
• D. All of the above products are formed.

Answer 1

The correct option is D All of the above products are formed.

The reaction between acidified K${}_{2}C{r}_2{O}_7$ and Ki is given as:

$K_{2}C{r}_2{O}_7+7H_{2}S{O}_4+6KI\to 4K_{2}S{O}_4+C{r}_2(S{O}_4{)}_3+7H_{2}O+3I_2$

So, the products of the reaction are Chromium sulphate, Potassium sulphate , iodine, and water.

Hence, the correct option is $D$