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Different Physical Properties of HCl

Pcl3 fumes in...

Question

Pcl3 fumes in moist air. Give reason

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Solution

Dear student!
In presence of moisture PCl₃ rapidly reacts with water and hydrolyses to form HCl gas which fumes in air and phosphorous acid is formed.
The reaction is given as:
PCl₃ + 3H₂O -------> H₃PO₃ + 3HCl (fumes)
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