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

Which of the following statement about anhydrous aluminum chloride is correct?
  1. It fumes in moist air.
  2. It exists as dimer both in the vapor state below 35 0 o C and in non-polar solvents
  3. It is prepared by heating A l 2 O 3 in a stream of Sulphur chloride ( S 2 C l 2 ) vapor and chlorine.
  4. All of these

Solution

(i) A l C l 3 + 3 H 2 O → A l O H 3 + 3 H C l ↑ f u m e s

(ii) It exists as dimer in non-polar solvents like benzene and in vapour state below 350 o C .

(iii) 4 A l 2 O 3 + 3 S 2 C l 2 + 9 C l 2 → 8 A l C l 3 + 6 S O 2 ↑
A , B , C are correct D

Asked in: JEE-TOPICTESTS-CHEMISTRY

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