MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic Chemistryp-Block (group 13 and 14)Aluminium and Its Compounds

When excess of NaOH solution is added in potash alum, the product is:

A.a bluish white precipitate

B.clear solution✓ Correct

C.a white precipitate

D.a greenish precipitate

Explanation

Alum consist 2 4 3 Al SO react with NaOH 2 4 2 4 5 3 2 2 3 Al SO 6NaOH 2Al OH 3Na SO Al OH NaOH NaAlO 2H O soluble + ® + + ® +

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