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Find out % of oxalate ion ina given samp...

Find out % of oxalate ion ina given sample of an alkali metal oxalate salt, 0.30g of it is dissolve in 100mL water and its required 90mL OF Centimolar `KMnO_(4)` solution in aicdic medium:

A

`66%`

B

`55%`

C

`44%`

D

`6.6%`

Text Solution

Verified by Experts

The correct Answer is:
A
`1000 xx (W)/(24 +64) xx 2 = 90 xx (1)/(100) xx 5`,
`W = 0.198g`
% of oxalate ion in a given sample
`= (0.198)/(0.3) xx 100 = 66`
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