\( 20 \, \text{mL} \) of \( 0.02 \, \text{M} \) hypo solution is used for the titration of \( 10 \, \text{mL} \) of copper sulphate solution, in the presence of excess of \( \mathrm{KI} \) using starch as an indicator. The molarity of \( \mathrm{Cu^{2+}} \) is found to be be _______ \( \times 10^{-2} \, \text{M} \). (nearest integer)
Given : \( 2\mathrm{Cu^{2+}} + 4\mathrm{I^-} \rightarrow \mathrm{Cu_2I_2} + \mathrm{I_2} \)
\( \mathrm{I_2} + 2\mathrm{S_2O_3^{2-}} \rightarrow 2\mathrm{I^-} + \mathrm{S_2O_6^{2-}} \)
