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At 200^@C PCI5 dissociates as follows : ...

At `200^@C PCI_5` dissociates as follows :
`PCl_5(g) iff PCl_3(g) + Cl_2(g)`
It was found that the equilibrium vapours are 62 times as heavy as hydrogen. The degree of dissociation of `PCl_5` at `200^@C` Is nearly :

A

`10%`

B

`42%`

C

`50%`

D

`68%`

Text Solution

Verified by Experts

The correct Answer is:
D
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