Some Basic Concepts Of Chemistry Question 260

Question: A solution of 10 ml $ \frac{M}{10}FeSO _4 $ was titrated with $ KMnO _4 $ solution in acidic medium. The amount of $ KMnO _4 $ used will be [CPMT 1984]

Options:

A) 5 ml of 0.1 M

B) 10 ml of 1.1 M

C) 10 ml of 0.5 M

D) 10 ml of 0.02 M

Show Answer

Answer:

Correct Answer: D

Solution:

$ KMnO _4 $ $ FeSO _4 $

$ \frac{M _1V _1}{n _1} $ = $ \frac{M _2V _2}{n _2} $ ; $ M _1V _1=\frac{n _1}{n _2}M _2V _2 $

$ =\frac{2}{10}\times 10\times \frac{1}{10}=\frac{1}{5}=0.2 $

For , $ M _1V _1=0.02\times 10=\frac{1}{5} $



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