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KMnO4 reacts with Na2S2O3 in acidic, str...

`KMnO_4` reacts with `Na_2S_2O_3` in acidic, strongly basic and aqueous (neutral) media. `100mL` of `LMnO_4` reacts with 100 mL of 0.1 M `Na_2S_2O_3` in acidic, basic and neutral media.
Q. The molarity (M) of `KMnO_4` in aqueous medium is

A

0.8M

B

0.08M

C

0.26M

D

0.026M

Text Solution

Verified by Experts

The correct Answer is:
c
`MnO_4^(ɵ)-=S_2O_3^(2-)(S_2O_3^(2-)to2HSO_4^(ɵ)+8e^(ɵ))(n=8)`
`100mLxxN-=100mLxx0.1xx8` (n factor)
`N=0.8`
`M=(0.8)/(3)=0.26`
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