Some properties of sulphuric acid are listed below. Choose the role played by sulphuric acid as A,B,C or D which is responsible for the reaction (i) to (v). Some role/s may be repeated: S+H2SO4(conc.)→3SO2+2H2O
A
Dilute acid
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B
Dehydrating agent
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C
Non-volatile acid
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D
Oxidising agent
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Solution
The correct option is C Oxidising agent In the given reaction concentrated sulphuric acid acts as an oxidizing agent. It oxidizes sulphur from 0 to +2 state. Sulphur dioxide is the product formed. It acts as the oxidising agent due to the fact that on thermal decomposition it yield nascent oxygen .