Q 1159445314.     Calculate the molarity of `KMnO_4` solution, `20` mL of which is just sufficient to oxidise `0.238` g of `U^(4+)` in acidic medium according to

the reaction

`5U^(4+) + 2MnO_4^(-) + 6H_2O → 5UO_2^(2+) + Mn^(2+) + 4H_3O^+`

(atomic mass of `U = 238`)



A

`0.05 M`

B

`0.25 M`

C

`0.08 M`

D

`0.02 M`

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