Published by:
CGP EDU Academic Team
Published on: August 13, 2026
20 mL of 0.02 M hypo solution is used for the titration of 10 mL of copper sulphate solution, in the presence of excess of KI using starch as an indicator. The molarity of Cu 2+ is found to be _____x 10 -2 M [nearest integer]Given : 2Cu 2+ + 
Cu 2 I 2 + I 2 I 2 + 
+ 
Text Solution
Verified by ExpertsThe correct answer is:
4
(4)
n eq . of I 2 = n eq of Na 2 S 2 O 3 = 20 x 0.002 x 1
2 x n mol of I 2 =0.4
n mol of I 2 = 0.2 m mol
n mol of Cu +2 = 0.2x2x10 -3
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