Question

$A{l}_2{O}_3$ can be converted to anhydrous $AlC{l}_3$ by heating:

• A. $A{l}_2{O}_3$ with $HCl$ gas
• B. $A{l}_2{O}_3$ with $NaCl$ in solid state
• C. a mixture of $A{l}_2{O}_3$ and carbon in dry $C{l}_2$ gas
• D. $A{l}_2{O}_3$ with $C{l}_2$ gas

Answer 1

The correct option is C a mixture of $A{l}_2{O}_3$ and carbon in dry $C{l}_2$ gas

$A{l}_2{O}_3$ can be converted to anhydrous $AlC{l}_3$ by heating a mixture of $A{l}_2{O}_3$ and carbon in dry $C{l}_2$ gas.
$A{l}_2{O}_3+3C+3C{l}_2\to 2AlC{l}_3+3CO\uparrow$