how is aluminium hydroxide prepared
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Virtually all the aluminium hydroxide used commercially is manufactured by the Bayer process which involves dissolving bauxite in sodium hydroxide at temperatures up to 270 °C (518 °F). The waste solid, bauxite tailings, is removed and aluminium hydroxide is precipitated from the remaining solution of sodium aluminate.
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burn a ribbon of magnesium and you get magnesium oxide (MgO).
then dissolve the ash(magnesium oxide) in water and you get magnesium hydroxide (MgOH2).
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