Which of the following method can be used for preparation of anhydrous

1.	Which of the following method can be used for preparation of anhydrous AlCl_(3)
Answer» heating `AlCl_(3)6H_(2)O` heating of MIXTURE of ALUMINA and coke in a CURRENT of dry chlorine passing dry HCl gas over heated AL power passing dry Cl over head Al Solution :Heating of mixture of alumina and coke, .Al. powder heated with dry HCl as well as passing dry .Cl. over .Al..

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