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Question

Which of the following produces PCl3 ?


A

By treating white phosphorus in an aqueous solution containing dissolved

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B

When white phosphorus is treated with a jet of dry Chlorine gas

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C

By hydrolysis of

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D

When Thionyl chloride reacts with white phosphorus

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Solution

The correct options are
B

When white phosphorus is treated with a jet of dry Chlorine gas


D

When Thionyl chloride reacts with white phosphorus


When white Phosphorus reacts with Chlorine gas,

P4+6Cl24PCl3

White phosphorus does not seem to yield the same product in an aqueous solution containing dissolved Cl2.Note that PCl3 is very highly toxic and corrosive. Its production is regulated and controlled according to the chemical weapons convention.

When white Phosphorus reacts with Thionyl Chloride,

P4+8SOCl24PCl3+4SO2+2S2Cl2

When Phosphorus pentachloride undergoes hydrolysis,

PCl5+4H2OH3PO4+5HCl


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