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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` solution in the acidic medium is

A

0.2 M

B

0.02 M

C

0.4 M

D

0.04 M

Text Solution

Verified by Experts

The correct Answer is:
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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Knowledge Check

  • 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 basic medium is:

    A
    0.8 M
    B
    0.08 M
    C
    0.26 M
    D
    0.026M

  • 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

  • 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 molality (m) of KMnO_4 in the acidic medium is (Density of KMnO_4 ) solution =1.58^(-1) Mw(KMnO_4)=158gmol^(-1))

    A
    `0.025`
    B
    `0.25`
    C
    `0.12`
    D
    `0.012`
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