The oxidation state of chromium in the final product formed by the reaction between KI and acidified potassium dichromate solution is+4+6+2+3

The reaction between KI (potassium iodide) and acidified potassium dichromate solution is a redox reaction. In this reaction, the dichromate ion (Cr2O7^2-) is reduced to chromium ion (Cr^3+).

Here are the steps to determine the oxidation state of chromium in the final product:

1. Write down the half-reaction for the reduction of dichromate ion to chromium ion:

   Cr2O7^2- + 14H^+ + 6e^- -> 2Cr^3+ + 7H2O

2. From the half-reaction, we can see that each chromium atom gains 3 electrons during the reduction. This means that the oxidation state of chromium decreases from +6 in the dichromate ion to +3 in the chromium ion.

3. Therefore, the oxidation state of chromium in the final product is +3.