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  4. Al2O3 can be converted into anhydrous AlCl3 by heating

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Q. $ Al_2O_3$ can be converted into anhydrous $AlCl_3$ by heating

AIPMTAIPMT 2006The p-Block Elements

Solution:

$ Al_2O_3$ may be converted into anhyd. $AlCl_3$ by heating a mixture of $ Al_2O_3$ and carbon in dry chlorine.

$ Al_2O_3 + 3C + 3Cl_2 \longrightarrow Al_2Cl_6 $ $22\,mm$ Hot and dry $8\,mm$ Anhy $AlCl_2$