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MnO(4)^(-) oxidizes (i) oxalate ion in a...

`MnO_(4)^(-)` oxidizes (i) oxalate ion in acidic medium at 333 K and (ii) HCl. For balanced chemical equations, the rations `[MnO_(4)^(-) : C_(2)O_(4)^(2-)]` in (i) and `[MnO_(4)^(-) : HCl]` in (ii), respectively, are -

A

1 : 5 and 2 : 5

B

2 : 5 and 1 : 8

C

2 : 3 and 1 : 5

D

5 : 2 and 1 : 8

Text Solution

Verified by Experts

The correct Answer is:
B
`16H^(+)+2MnO_(4)^(-)+5C_(2)O_(4)^(2-) rarr 2Mn^(+2)+10CO_(2)+8H_(2)O`
`MnO_(4)^(-) : C_(2)O_(4)^(2-) = 2: 5`
`2KMnO_(4)+16 HCl rarr 2KCl+2MnCl_(2)+5Cl_(2)+8H_(2)O`
`MnO_(4)^(-) : HCl =2 : 16 = 1 : 8`
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