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5 moles of PCl(5) are heated in a closed...

5 moles of `PCl_(5)` are heated in a closed vessel of 5 litre capacity. At equilibrium `40%` of `PCl_(5)` is found to be dissociated. What is the value of `K_(c)` ?

A

0.266 M

B

0.133 M

C

2.5 M

D

0.20 M

Text Solution

Verified by Experts

The correct Answer is:
A
`{:(,PCl_(5(g)) , `K_c = ([PCl_3][Cl_2])/([PCl_5]) = (0.4 M xx 0.4 M)/(0.6 M) = 0.266 M`
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