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White fumes appear around the bottle of ...

White fumes appear around the bottle of anhydrous aluminium chloride. Give reason.

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Anhydrous aluminium chloride is partially hydrolysed by atmospheric moisture to liberate HCl gas.
Moist HCl appears white in colour.
`AlCl_(3)(s) + 3H_(2)O(l) rarr Al(OH)_(3) + 3HCl(g)`
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