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`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` solution in the acidic medium isA. 0.2 MB. 0.02 MC. 0.4 MD. 0.04 M |
Answer» Correct Answer - B `MnO_(4)^(ɵ)-=S_(2)O_(3)^(2-)` `(2S_(2)O_(3)^(2-)toS_(4)O_(6)^(2-)+2e^(-))` `100mLxxN-=100mLxx0.1xx1` (n-factor) `N=0.1` `M=(0.1)/("n factor")=(0.1)/(5)=0.02M` |
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