$\text{Cr}_2\text{O}_7^{2-} + \text{I}^- + \text{H}^+ \longrightarrow \text{Cr}^{3+} + \text{I}_2 + \text{H}_2\text{O}$

The equivalent weight of the reductant in the above equation is (At. wt. of Cr = 52, I = 127):