why cryolite is used in the extraction of aluminum metal
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Cryolite is a ore of aluminium so it is needed to extract aluminium
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Because of Aluminium oxide does not dissolve in water, but it does dissolve in molten cryolite. This is an aluminium compound with a lower melting point than aluminium oxide. The use of cryolite reduces some of the energy costs involved in extracting aluminium. The diagram shows an aluminium oxide electrolysis cell.
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