Some Basic Concepts Of Chemistry Question 245
Question: $ KMnO _4 $ reacts with ferrous ammonium sulphate according to the equation $ MnO_4^{-}+5F{e^{2+}}+8{H^{+}}\to M{n^{2+}}+5F{e^{3+}}+4H _2O $ , here 10 ml of 0.1 M $ KMnO _4 $ is equivalent to [CPMT 1999]
Options:
A) 20 ml of 0.1 M $ FeSO _4 $
B) 30 ml of 0.1 M $ FeSO _4 $
C) 40 ml of 0.1 M $ FeSO _4 $
D) 50 ml of 0.1 M $ FeSO _4 $
Show Answer
Answer:
Correct Answer: D
Solution:
$ KMnO _4= $ Mohr salt $ \frac{M _1V _1}{n _1}=\frac{M _2V _2}{n _2} $ ; $ \frac{0.1\times 10}{1}=\frac{M _2V _2}{5} $ ; $ M _2V _2=5 $ .
