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What is the chemical formula of alumina and anhydrous aluminium chloride?(a) Al2O3, AlCl(b) Al2O3, AlCl3(c) Al2O, AlCl3(d) AlO3, AlCl3This question was posed to me in an interview for internship.I need to ask this question from p-Block Elements in division p-Block Elements of Chemistry – Class 11

Answer»

Correct option is (b) Al2O3, AlCl3

Easy explanation: The chemical formula of alumina is Al2O3 and that of ANHYDROUS aluminium CHLORIDE is AlCl3. Alumina is nothing but aluminium oxide. Anhydrous aluminium chloride is PREPARED by heating a mixture of alumina and carbon in a current of dry CHLORINE.



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