(a(i))[1]
Write the equation that shows carbon dioxide being reduced by coke.
(a(ii))[1]
Write the equation showing iron(III) oxide being reduced to iron by carbon monoxide.
(b)[1]
Why is limestone introduced into the blast furnace?
(c)[2]
An iron ore contains an oxide with the formula $\text{Fe}_3\text{O}_4$. Calculate the percentage by mass of iron present in $\text{Fe}_3\text{O}_4$.
(d)[2]
State which reaction is oxidation and which is reduction. Explain your answer.
(e)[2]
Explain how fixing magnesium strips to the iron hulls of ships prevents the iron from rusting.
(f)[1]
Aqueous iron(II) chloride is one product when iron reacts with hydrochloric acid. Construct an equation for this reaction.