Q. 704.0( 2 Votes )

An amorphous soli

Answer :

the amorphous solid A is sulphur (s8) while gas b is sulphur dioxide.

S8 + 8O28SO2

The gas SO2 turns the lime water milky.

Roasting of sulphide ore :

2ZnS + 3o22ZnO + 2SO2

Hence sulphur dioxide is produced during the roasting of sulphide ore.

The gas B decolourise the acidified KMnO4 solution and reduces Fe3+ to Fe2+

2KMnO4 + 5SO2 +2H2O K2SO4 + 2MnSO4 + 2H2SO4

Fe(SO4)3 + SO2 + 2H2O 2FeSO4 + 2H2SO4

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