Explain the following reactions : Hydrated alumina is treated with aq

1.	Explain the following reactions : Hydrated alumina is treated with aqueous NaOH solution.
Answer» Solution :When hydrated alumina is added to sodium HYDROXIDE, the former DISSOLVES in the latter because of the formation of sodium meta aluminate. `UNDERSET"HYDROUS alumina"(Al_2O_3 . 2H_2O)+2NaOH_((AQ)) oversetDeltato underset"Sodium meta-aluminate"(2NaAlO_2)+ 3H_2O`

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