Some Basic Concepts Of Chemistry Question 74

Question: Number of moles of $ KMnO _4 $ required to oxidize one mole of $ Fe(C _2O _4) $ in acidic medium is

Options:

A) 0.167

B) 0.6

C) 0.2

D) 0.4

Show Answer

Answer:

Correct Answer: B

Solution:

[b] The required equation is $ 2KMnO _4+3H _2SO _4\xrightarrow{{}} $ $ K _2SO _4+2MnSO _4+3H _2O+~\underset{nascentoxygen}{\mathop{5[ O ]}}, $

$ 2Fe( C _2O _4 )+3H _2SO _4+3[ O ]\xrightarrow{{}} $ $ Fe _2{{( SO _4 )}_3}+2CO _2+3H _2O $

$ O $ required for 1 mol. of $ Fe(C _2O _4) $ is 1.5,5 $ O $ are obtained from 2 moles of $ KMnO _4 $

$ \therefore 1.5[ O ] $ will be obtained from $ =\frac{2}{5}\times 1.5=0.6 $ moles of $ KMnO _4 $ .



जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक