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MnO(4)^(-) ions are reduced in acidic co...

`MnO(4)^(-)` ions are reduced in acidic condition to `Mn^(2+)` ions whereas they are reduced in neutral condition to `MnO_(2)`. The oxidation of 25 mL of a solution X containing `Fe^(2+)` ions required in acidic condition 20 mL of a solution Y containing `MnO_(4)^(-)` ions. What volume of solution Y would be required to oxidise 25 mL of solution X containing `Fe^(2+)` ions in neutral condition ?

A

11.4 mL

B

12.0 mL

C

33.3 mL

D

35.0 mL

Text Solution

Verified by Experts

The correct Answer is:
C
`overset(+7)(MnO_(4)^(-))+5e^(-)overset(H+)(rarr)overset(+2)(Mn^(2+))`
`overset(+7)(MnO_(4)^(-))+3e^(-)overset(("neutral"))(rarr)overset(+4)(MnO_(2))`
`:.` 20 mL of `MnO_(4)^(-)(H^(+))`
`-=(20xx5)/(3)"mL of " MnO_(4)^(-)` (neural)
`:. y=33.33 mL`
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