Which of the following reactions will not give the anhydrous AlCl3 ?

Question

Which of the following reactions will not give the anhydrous AlCl3 ? (A) By heating AlCl3 6H2O  (B) By passing dry HCl gas on heated aluminium powder (C) By passing dry chlorine gas on heated aluminium powder (D) By passing dry chlorine gas over a heated mixture of alumina and coke

Tardigrade Admin · Accepted Answer

[a] 2AlCl36H2O ->[Δ] Al2O3 + 6HCl uparrow + 9H2O uparrow [b] 2Al + underset text(dry)3HCl → 2AlCl3 + 3H2 uparrow [c] 2Al + underset text(dry)3Cl2 → 2AlCl3 [d] Al2O3 + 3C + 3Cl2 → 2AlCl3 + 3CO uparrow

Q. Which of the following reactions will not give the anhydrous $A lC l_{3}$ ?

By heating $A lC l_{3} 6 H_{2} O$

By passing dry $H Cl$ gas on heated aluminium powder

By passing dry chlorine gas on heated aluminium powder

By passing dry chlorine gas over a heated mixture of alumina and coke

[a] $2 A lC l_{3} 6 H_{2} O Δ A l_{2} O_{3} + 6 H Cl ↑ + 9 H_{2} O ↑$
[b] $2 A l + (dry) 3 H Cl \to 2 A lC l_{3} + 3 H_{2} ↑$
[c] $2 A l + (dry) 3 C l_{2} \to 2 A lC l_{3}$
[d] $A l_{2} O_{3} + 3 C + 3 C l_{2} \to 2 A lC l_{3} + 3 CO ↑$

Q. Which of the following reactions will not give the anhydrous AlCl3​ ?

By heating AlCl3​6H2​O

By passing dry HCl gas on heated aluminium powder