CCEA GCSE Chemistry by Nora Henry & Alyn G McFarland

Author:Nora Henry & Alyn G McFarland [Henry, Nora; McFarland, Alyn G]
Language: eng
Format: epub
Publisher: Hodder Education
Published: 2017-09-14T04:00:00+00:00

The iron is more reactive that the copper in solution, and so the copper is displaced by the iron.

Traditional methods of extracting copper from its ore involve digging, moving and disposing of large amounts of rock. This involves noise and dust pollution, and uses large amounts of energy to move and transport the rock. Phytomining avoids this and is better for the environment. It also produces energy when the plants are burned. However, it is a slow process, as it is necessary to wait for the plants to grow, and supply is seasonal rather than continuous.

Test yourself

13 a) What is a low-grade ore?

b) Why are new methods being developed to extract copper?

14 a) Solutions containing copper compounds can be produced by phytomining in areas with soil containing copper compounds. Describe how these solutions are produced.

b) Copper metal can be formed from copper ion solutions by displacement using scrap iron. For the displacement process:

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