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Manganese ions (Mn^(2+)) can be oxidised...

Manganese ions `(Mn^(2+))` can be oxidised by Persulphate ions `S_(2)O_(8)^(2-)` according to the following half-equations,
`S_(2)O_(8)^(2-)+2e^(-) to 2SO_(4)^(2-)`
`Mn^(2+)+4H_(2)O to MnO_(4)^(-)+4H_(2)O to MnO_(4)^(-)+8H^(+)+5e^(-)`
How many moles of `S_(2)O_(8)^(2-)` are required to oxidise 1mole of `Mn^(2+)`?

A

0.4

B

0.5

C

2.5

D

`1.0`

Text Solution

Verified by Experts

The correct Answer is:
C
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MOTION-OXIDATION & REDUCTION -EXERCISE-2 ( LEVEL-I)
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  13. The number of moles of thiosulphate (S(2)O(3)^(2-) ) that will require...

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  14. 3 " mol of "a mixture of FeSO(4) and Fe(2)(SO(4))(3) requried 100 " mL...

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  17. 20 ml of 0.1 M solution of metal ion reacted with 20 ml to 0.1 M SO(2)...

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  18. 0.7 g " of " Na(2)CO(3).xH(2)O were dissolved in water and the volume ...

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  19. When one gram mole of KMnO(4) is mixed with hydrochlroic acid then, th...

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