Give reaction of the following i) Zinc with hot conc. Caustic Alkali ii) aluminium oxide with hot conc. caustic potash.
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Explanation:
a) In the presence of hot concentrated caustic soda or hot concentrated sodium hydroxide, zinc reacts to form zincate sodium and hydrogen.
b) Aluminum reacts with sodium hydroxide to form sodium aluminate (aluminum oxide), hydrogen, and sodium oxide.
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