A tetravalent element forms monoxide and dioxide with oxygen. When air is passed over 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.
A
Lead
B
Carbon
C
Tin
D
Silicon
Text Solution
Verified by Experts
The correct Answer is:
B
Producer gas is a mixture of CO and `N_2` therefore, the tetravalent element is carbon and its monoxide and dioxide are CO and `CO_2` respectively. `2C_((s))+ubrace(O_(2(s))+4N_(2(g)))_("air") overset(1273K)to ubrace(2CO_((g))+4N_(2(g)))_("producer gas")` The carbon monoxide is a strong reducing agent and reduces ferric oxide to iron. `Fe_2O_(3(s)) +3CO_((g)) overset(Delta)to 2Fe_((s)) +3CO_(2(g))`
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