Chemistry - Complete Pblock- Question with Solution | TestHub

Anhydrous $AlC{l}_3$ is a hygroscopic substance. It readily undergoes hydrolysis in the presence of atmospheric moisture.

The reaction is:

$AlC{l}_3(s)+3H_{2}O(g)\to Al(OH{)}_3(s)+3HCl(g)$

The white fumes observed are due to the formation of hydrogen chloride (HCl) gas, which then reacts with atmospheric moisture to form tiny droplets of hydrochloric acid, appearing as white fumes.

The final answer is C.