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GCSE

Extracting Metals

Question

Why is electrolysis expensive?

3 years ago

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Asha Lemke


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Electrolysis is an expensive processes as it requires metals to be in the molten form so that the ions are free to move. As metals have such high melting points this requires a lot of energy input, which leads to their expense. For instance, aluminium oxide has a melting point of over 2000 °C.

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