Question

In the titration of CuSO/Hypo, a dark yellow color is obtained on the addition of KI in CuSO4 solution. Why is this dark yellow color obtained?

Answer 1

4 KI + 2 CuSO₄ → 2 CuI + I₂ + 2 K₂SO₄

I₂ as a product of this reaction results in dark yellow color obtained.