Question

Anhydrous $AlCl_{3}$ cannot be obtained from which of the following reactions.

• A. Heating $AlCl_{3}.6H_{2}O$
• B. By passing dry $HCl$ over hot aluminium powder
• C. By passing dry $Cl_{2}$ over hot aluminium powder
• D. By passing dry $Cl_{2}$ over a hot mixture of alumina and coke

Answer 1

Answer: (A)

Heating $AlCl_{3}.6H_{2}O$

Answer 2

$AlCl_{3}.6H_{2}O\overset{\quad\Delta\quad}{\rightarrow}Al(OH)_{3} + 3HCl + 3H_{2}O$

Thus $AlCl_{3}$ can not be obtained by this method.