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Question

Aluminium oxide reacts with hot concentrated solution of sodium hydroxide to form:


A

sodium aluminate

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B

aluminous hydroxide

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C

aluminium hydride

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D

sodium aluminate hydroxide

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Solution

The correct option is A

sodium aluminate


Aluminium oxide reacts with hot concentrated solution of sodium hydroxide to form sodium aluminate. The reaction involved is:

Al2O3.2H2O(s)+2NaOH(aq)2NaAlO2(aq)+3H2O(l)

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