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5.1 Obtaining and using metals

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Question 14
H

A mining company is evaluating bioleaching to obtain copper from a low-grade ore.

Statement 1: bioleaching produces a solution containing copper ions, so a further step such as displacement with scrap iron is needed to obtain copper metal

Statement 2: bioleaching is chosen because it extracts copper faster than smelting

Statement 3: bioleaching can obtain copper from ores that contain too little copper to be smelted economically

Statement 4: bioleaching produces no harmful substances, so it has no environmental impact

Which statements are correct?

[1]
A

1 and 3 only

B

2 and 3 only

C

1, 2 and 3 only

D

1, 3 and 4 only

Markscheme

5.1 Obtaining and using metals Questions

  1. GCSE
  2. /Chemistry
  3. /5.1 Obtaining and using metals

45 exam-style questions on Edexcel GCSE Chemistry 5.1 Obtaining and using metals, covering 5.1.1 The reactivity series of metals, 5.1.2 Displacement reactions as redox reactions, 5.1.3 Extracting metals from ores by reduction, 5.1.4 Biological methods of metal extraction, 5.1.5 Resistance to oxidation and recycling metals, and 5.1.6 Life cycle assessment. Each one has a worked solution and a mark scheme showing where the marks go.

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