A tetravalent element forms monoxide and dioxide with oxygen. When air is passed over the heated element (1273 K), producer gas is obtained. Monoxide of the element is a powerful reducing agent and reduces ferric oxide to iron. Identify the element and write formulas of its monoxide and dioxide. Write chemical equations for the formation of producer gas and reduction of the ferric oxide with the monoxide.


2C + O2 →2CO (direct oxidation of carbon)

373K


HCOOH → H2O + CO (DEHYDRATION OF FORMIC ACID AT 373K WITH CONCENTRATED H2SO4)


C + H2O → CO + H2(a mixture of CO and H2 is called water gas)


2C + O2 + 4N2 → 2CO + 4N2 (a mixture of CO and N2is producer gas)


REDUCTION OF FERRIC OXIDE WITH MONOXIDE


Fe2O3 + 3CO → → 2Fe + 3CO2


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