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The method used to extract a metal from its ore depends on the position of the metal in the reactivity series - Edexcel - GCSE Chemistry - Question 6 - 2022 - Paper 1
Question 6
The method used to extract a metal from its ore depends on the position of the metal in the reactivity series. (a) Aluminium is extracted from its ore by electrolys... show full transcript
Worked Solution & Example Answer:The method used to extract a metal from its ore depends on the position of the metal in the reactivity series - Edexcel - GCSE Chemistry - Question 6 - 2022 - Paper 1
Step 1
Explain why this method is used to extract aluminium from its ore.
Answer
Aluminium extraction from its ore involves electrolysis because aluminium is very reactive and cannot simply be displaced from its compounds by carbon, unlike less reactive metals. This method is necessary as it allows for the extraction of aluminium without reducing it through carbon, which is ineffective for this highly reactive element.
Step 2
Explain why this displacement reaction can be described as a redox reaction.
Answer
This displacement reaction can be described as a redox reaction because it involves the transfer of electrons between magnesium and titanium. In this process, magnesium is oxidized as it loses electrons, while titanium is reduced as it gains electrons. The reduction of titanium and oxidation of magnesium highlight the characteristic features of redox reactions.
Step 3
Step 4
Step 5
Devise a simple method to obtain a sample of copper from copper oxide in the laboratory.
Answer
One method to obtain copper from copper oxide is to heat the copper oxide with carbon in a suitable apparatus. This process involves reduction where carbon reacts with copper oxide to produce copper metal and carbon dioxide: