Roasting of sulphides gives the gas X as a by product. This is a colorless gas with choking smell of burnt sulphur and causes great damage to respiratory organs as a result of acid rain. Its aqueous solution is acidic, acts as a reducing agent and its acid has never been isolated. The gas X is:

  • Option 1)

    SO3

  • Option 2)

    H2S

  • Option 3)

    SO2

  • Option 4)

    CO2

 

Answers (1)

As learnt in concept @10255

Roasting is heating of the ore in the presence of air below its fusion temperature.

for instance, 2PleS+3O_{2}\rightarrow 2PleO+2SO_{2}

SO_{2} has a choking smell and causes acid rain. 

 


Option 1)

SO3

This solution is incorrect.

Option 2)

H2S

This solution is incorrect.

Option 3)

SO2

This solution is correct.

Option 4)

CO2

This solution is incorrect.

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