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Reactions of Acids

The substance...

Question

The substance which react with hot conc.NaOH soln.& undergoes a neutralization reaction
Al?O?
Al
Al(OH)?

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Solution

The solution is as follows:

Hot conc NaOH reacts with Al₂O₃ as follows:

Al₂O₃ + NaOH (conc) $\to$ NaAlO₂+ H₂O

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