State the reason for addition of caustic alkali to bauxite ore during purification of bauxite.
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16
Bauxite dissolves in caustic alkali and thus impurities can be separated.
kiwiandme:
does that happen becayse it is a base and base reaction?
Answered by
14
Caustic alkali dissolves aluminium oxide forming soluble sodium aluminate while impurities remain insoluble and precipitate as red mud.
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