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Three moles of PCl(5) , three moles of P...

Three moles of `PCl_(5)` , three moles of `PCl_(3)` and two moles of `Cl_(2)` are taken in a closed vessel . If at equilibrium the vessel has 1.5 moles of `PCl_(5)` , the number of moles of `PCl_(3)` present in it is

A

6

B

4.5

C

5

D

3

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The correct Answer is:
B
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