In step 1, carbon burns in air to form carbon dioxide. Give one other reason why carbon is burned in air in the blast furnace.
In step 2, carbon monoxide is formed when carbon dioxide reacts with carbon. State one harmful effect of carbon monoxide on health.
In step 3, iron(III) oxide is reduced by carbon monoxide. Write the symbol equation for this reaction.
Explain why calcium carbonate is added to the blast furnace. Include any suitable reactions or equations in your answer.
State two different properties that are characteristic of transition elements but not of Group I metals.
Explain two distinct ways in which zinc stops rusting when iron is galvanised.
The equation describes iron reacting with steam in a closed container: $3\text{Fe}(s)+4\text{H}_2\text{O}(g)\rightleftharpoons \text{Fe}_3\text{O}_4(s)+4\text{H}_2(g)$. Predict and explain what happens to the equilibrium position when the pressure is increased. The temperature stays constant.
$\text{Fe}_3\text{O}_4$ reacts with concentrated hydrochloric acid. The products are iron(II) chloride, iron(III) chloride and a liquid that turns blue cobalt(II) chloride paper pink. Construct the symbol equation for this reaction.