In the industrial extraction of titanium, titanium(IV) chloride is reacted with liquid magnesium at high temperatures:
TiCl4(l)+2Mg(s)→Ti(s)+2MgCl2(s) \text{TiCl}_4(l) + 2\text{Mg}(s) \rightarrow \text{Ti}(s) + 2\text{MgCl}_2(s) TiCl4(l)+2Mg(s)→Ti(s)+2MgCl2(s)Which statement correctly describes the role and behavior of magnesium in this reaction?
Magnesium acts as the oxidising agent because it gains electrons.
Magnesium acts as the reducing agent because it loses electrons.
Magnesium acts as the reducing agent because its oxidation state decreases.
Magnesium acts as the oxidising agent because it oxidises the titanium ions.
55 exam-style questions on OCR GCSE Chemistry Types of chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.