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In which case K(p) is less than K(c) ?...

In which case `K_(p)` is less than `K_(c)` ?

A

`PCl_(5)hArr PCl_(3)+Cl_(2)`

B

`H_(2)+Cl_(2) hArr 2HCl`

C

`2SO_(2)+O_(2) hArr 2SO_(3)`

D

All of above

Text Solution

Verified by Experts

The correct Answer is:
C
`K_(p)=K_(c) (RT)^(Delta n)`
For `K_(p)` to be less than `K_(c), Delta n` has to be negative `(RT gt 1)`. For
`2SO_(2)+O_(2) hArr 2SO_(3)`
`Delta n =2-(2+1)= - 1`
Therefore for this reaction `K_(p) lt K_(c)`.
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