From Which Of The Following, SO2 is Formed?

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Question

From which of the following, SO2 is formed?

Solution

Correct option is

Reaction of Na2SO3 with conc. H2SO4

Na2SO3 is treated with conc. H2SO4 to form SO2 

Na2SO3 + H2SO4(conc.) âŸ¶ Na2SO4 + SO2 + H2O.

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