1.

Reaction of solid KMnO_(4) with conc. H_(2)SO_(4) produces manganeses heptoxide (Mn_(2)O_(7)) in

Answer»

Solution state
Solid state
Fine powder
None of these

Solution :`KMnO_(4)` on treatment with conc. `H_(2)SO_(4)` forms manganese heptoxide via permanganyl sullphate which DECOMPOSES explosively on heating.
`2KMnO_(4)+3H_(2)SO_(4)rarr2KHSO_(4)+(MnO_(3))_(2)SO_(4)+2H_(2)O`
`(MnO_(3))_(2)SO_(4)+H_(2)Orarrunderset("liquied")underset("red-brown")(Mn_(2)O_(7))+H_(2)SO_(4)`
`Mn_(2)O_(7)rarr2MnO_(2)+(3)/(2)O_(2)`
`therefore Mn_(2)O_(7)` so formed is a red-brown LIQUID.


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