JEE Mains 26-July-2022 Shift 2 Solved Paper

Section: Chemistry

Question : 85 of 90

Marks: +1, -0

20‌mL of 0.02M hypo solution is used for the titration of 10‌mL of copper sulphate solution, in the presence of excess of KI using starch as an indicator. The molarity of Cu2+ is found to be _______ ×10−2M [nearest integer]
Given :2Cu2++4I−→Cu2I2+I2
I2+2S2O32−→2I−+S4O62−

[26-Jul-2022-Shift-2]

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