Question
Anhydrous $$AlC{l_3}$$ is prepared by
A.
reaction of $$HCl$$ and $$Al$$ metal
B.
reaction of dry $$HCl$$ gas and heated $$Al$$ metal
C.
passing conc. $$HN{O_3}$$ gas over heated $$Al$$ metal
D.
reaction of $$A{l_2}{O_3}$$ with $$dil.\,HCl$$
Answer :
reaction of dry $$HCl$$ gas and heated $$Al$$ metal
Solution :
\[2Al+6HC{{l}_{\left( g \right)}}\xrightarrow{\text{Heat}}2AlC{{l}_{3}}+3{{H}_{2}}\]