Question

Which of the following statement about anhydrous aluminum chloride is correct?

• A. It fumes in moist air.
• B. It exists as dimer both in the vapor state below $350^{\circ}C$ and in non-polar solvents
• C. It is prepared by heating $Al_{2}O_{3}$ in a stream of Sulphur chloride ( $S_{2}Cl_{2}$ ) vapor and chlorine.
• D. All of these

Answer 1

Answer: (D)

(i) $AlCl _3+3 H _2 O \rightarrow AlOH _3+3 HCl \uparrow$ fumes
(ii) It exists as dimer in non-polar solvents like benzene and in vapour state below $350^{\circ} C$.
(iii) $4 Al _2 O _3+3 S _2 Cl _2+9 Cl _2 \rightarrow 8 AlCl _3+$ $6 SO _2 \uparrow$
$A , B , C$ are correct $D$