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Question

Question: Al2O3 can be converted to anhydrous AlCl3 by heating :...

Al2O3 can be converted to anhydrous AlCl3 by heating :

A

Hydrated Al2O3 with Cl2 gas

B

Al2O3 with aqueous HCl

C

Al2O3 with NaCl in solid state

D

A mixture of Al2O3 and carbon in dry Cl2 gas

Answer

A mixture of Al2O3 and carbon in dry Cl2 gas

Explanation

Solution

Al2O3 + 3Cl2 + 3CΔ\overset{\quad\Delta\quad}{\rightarrow}2AlCl3 + 3CO.