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Question
Name the compound formed when: Bauxite reacts with sodium hydroxide.
Solution
Sodium meta aluminate
Explanation:
Bauxite reacts with sodium hydroxide at 140°C -150°C to give sodium meta aluminate and water. Also, insoluble impurities are left behind as mud which consists of ferric oxide, sand, etc. The reaction is given as:
\[\ce{Al2O3.2H2O_{(s)} + 2NaOH_{(aq)}->2NaAlO2_{(aq)}+ 3H2O}\]
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