A student compared the industrial processes used to extract iron and copper from their ores.
Name the main ore used as the source of iron in the blast furnace.
Copper can be extracted from tenorite, which consists of copper(II) oxide. What is the chemical formula of copper(II) oxide?
Carbon (coke) is a solid element used in the blast furnace. Explain its role in producing the reducing agent, carbon monoxide (CO\text{CO}CO).
Oxygen gas is blown into the blast furnace. State its main purpose in the extraction process.
What name is given to a reaction that involves both reduction and oxidation?
Explain why this half-equation represents a reduction reaction:
Fe3++3e−→Fe \text{Fe}^{3+} + 3\text{e}^- \to \text{Fe} Fe3++3e−→FeIn one method of copper extraction, the following reaction occurs:
CuO+CO→Cu+CO2 \text{CuO} + \text{CO} \to \text{Cu} + \text{CO}_2 CuO+CO→Cu+CO2Identify the substance that is oxidised in this reaction, giving a reason for your choice.
Calcium carbonate (CaCO3\text{CaCO}_3CaCO3) is added to the blast furnace to remove impurities. Write the chemical equation for its thermal decomposition to form calcium oxide.
Write the balanced chemical equation for the reduction of iron(III) oxide (Fe2O3\text{Fe}_2\text{O}_3Fe2O3) by carbon monoxide (CO\text{CO}CO).
Calcium oxide reacts with silicon dioxide impurity to form slag:
CaO+SiO2→CaSiO3 \text{CaO} + \text{SiO}_2 \to \text{CaSiO}_3 CaO+SiO2→CaSiO3Identify the common name for the product, CaSiO3\text{CaSiO}_3CaSiO3.
