1.

Decolourisationof acidified permaganate in fast by Mohr'ssalt , butis solw by oxalate . Expalin .

Answer»

Solution :Oxalate, `""^(-)OOC-COO^(-)`, on OXIDATION GIVES `CO_(2)`. It is involves breaking of C-C bond, which requires energy.
Hence decolourisation of `MnO_(4)^(-)` by `C_(2)O_(4)^(2-)` is slow. On the other hard Mohr.s SALT is a COMPLEX salt containing `FE^(2+)`ions .


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