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The p-Block Elements — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryThe p-Block Elements2 Marks
Question
Explain the following reactions:
Hydrated alumina is treated with aqueous NaOH solution.
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Answer

When hydrated alumina is added to sodium hydroxide, the former dissolves in the latter because of the formation of sodium meta-aluminate.
$\text{Al}_2\text{O}_3.2\text{H}_2\text{O}+2\text{NaOH}\rightarrow2\text{NaAlO}_2+3\text{H}_2\text{O}$

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