1.

`0.3 g` of an oxalate salts was dissolved in `100 mL` solution. The solution required `90 mL` of `N//20 KMnO_(4)` for complete oxidation. The `%` of oxalate ion in salt is:A. `33%`B. `66%`C. `70%`D. `40%`

Answer» Correct Answer - B
`"Meq. of oxalate" = "Meq. Of" KMnO_(4)`
`(w)/(88/2) xx 1000 = 90 xx (1)/(20)`
`:. w_("oxalate") = 0.198 g`
`% "oxalate " = (0.198)/(0.3) xx 100 = 66%`


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