Question

Given, $AlC{l_3}$ on hydrolysis gives :
A. $A{l_2}{O_3}.{H_2}O$
B. $A{l_2}{(OH)_3}$
C. $A{l_2}{O_3}$
D. $AlC{l_3}.6{H_2}O$

Answer 1

Aluminium trichloride ($AlC{l_3}$) describes compounds having the formula $AlC{l_3}.{({H_2}O)_n}$ (n = 0 or 6). They are made up of aluminium and chlorine atoms in a 1:3 ratio, with one form containing six hydration fluids. Both are white solids, although samples frequently contain iron(III) chloride, which gives them a yellow hue.

Complete answer:
Commercially, the anhydrous substance is crucial. Its melting and boiling points are quite low. It is primarily manufactured and used in the manufacture of aluminium metal, although considerable quantities are also utilised in other chemical industries. The chemical is frequently referred to as a Lewis acid. It's an inorganic substance that transforms from a polymer to a monomer reversibly at room temperature. Even weak Lewis bases like benzophenone and mesitylene can create Lewis acid-base adducts with anhydrous aluminium chloride.
Aluminium chloride is hygroscopic, meaning it absorbs water from the air. This chemical compound usually emits fumes in damp air. When it comes into touch with water, it makes a hissing sound. $C{l^ - }$ions are replaced by ${H_2}O$ molecules during the process, resulting in hexahydrate $\left[ {Al{{\left( {{H_2}O} \right)}_6}} \right]C{l_3}$. The anhydrous condition of $AlC{l_3}$ is lost, and when heat is applied, HCl also disappears, leaving aluminium hydroxide as the end product.
$AlC{l_3} + {H_2}O \to Al{(OH)_3} + 3HCl$

Hence option (C) is correct.

Note:
Aldehyde groups can be brought in or attached to aromatic series or rings using aluminium chloride. Consider the Gatterman-Koch reaction, in which the Lewis acid (aluminium chloride) is employed to extract a chloride ion from a species. It's also utilised in light molecular weight hydrocarbon polymerization and isomerization processes. Ethylbenzene synthesis and dodecylbenzene production for detergents are two common examples. Bis(arene) metal complexes can be made by mixing aluminium chloride with aluminium and arene.