First slide

Phosphorous pentachloride

Question

Which of the following is not correct for PCl₅ ?

Easy

A

In gaseous state, it is trigonal bipyramidal
B

Two P-Cl bonds are equal in length and longer than other three which are equal in length with one another
C

On heating PCl₅ gives PCl₃
D

It can be prepared by the reaction of white phosphorus with SOCI₂ [thionyl chloride)

Solution

White phosphorus on reacting with SOCl₂ gives PCl₃ and not PCl₅.
$P_{4} + 8 SOC l_{2} \overset{}{\to} 4 {PCl}_{3} + 4 {SO}_{2} + 2 S_{2} {Cl}_{2}$

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