Q22 of 72 Page 90

Hot conc. H2SO4 acts as moderately strong oxidising agent. It oxidises both metals and nonmetals. Which of the following element is oxidised by conc. H2SO4 into two gaseous products?

H2SO4H2O + SO2


C + 2O2CO2


And the net reaction is obtained by multiplying reaction 1 by 2.


Addition of reaction 1 and reaction 2


C + 2H2SO4CO2 + 2SO2 + 2H2O


The gaseous product formed during the oxidation of carbon by H2SO4 are:


CO2 AND SO2.


Hence the correct option is (iii)

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