1. J04/2/6. Iron is
extracted from its ore in a blast furnace using carbon (coke)
as a reducing agent and as a source of heat.
–(a) The coke burns in hot air. The equation for this
reaction is
•2C(s) + O2(g)
® 2CO(g)
–State the name of the gas produced in this reaction. [1]
–
–(b) Near the top of the blast furnace, the
iron(III) oxide in the iron ore gets reduced to iron.
•Fe2O3(s) + 3CO(g) ® 2Fe(l) + 3CO2(g)
– Use
the equation to explain why the change of iron(III) oxide to iron is a reduction
reaction. [1]