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Question
Give the preparation of the following:
PCl5
Short Answer
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Solution
Sulphuryl chloride can react with phosphorus or phosphorus trichloride to create phosphorus pentachloride.
\[\ce{P4 + 10SO2Cl2 -> 4PCl5 + 10SO2}\]
\[\ce{PCl3 + \underset{chloride}{\underset{Sulphuryl}{SO2Cl2}} -> PCl5 + SO2}\]
It is made in a lab by reacting phosphorus trichloride with an excess of dry chlorine.
\[\ce{PCl3 + Cl2 -> PCl5}\]
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