Questions/p-block Group 13 & 14/Why do white fumes a...
Aluminium & its compoundsp-block Group 13 & 14

Why do white fumes appear around a bottle of anhydrous aluminium chloride?

Expert Answer

Anhydrous AlCl3AlCl_3 is partially hydrolysed by atmospheric moisture to liberate HClHCl gas. The white fumes are essentially condensed droplets of hydrochloric acid formed from this gas. Reaction: AlCl3+3H2O→Al(OH)3+3HClAlCl_3 + 3H_2O \rightarrow Al(OH)_3 + 3HCl

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