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A sample of HI(g) is placed in a flask a...

A sample of HI(g) is placed in a flask at a pressure of 0.2 atm. At equilibrium, the partial pressure of HI(g) is 0.04atm. The `K_(p)` for the equilibrium is :

A

4

B

0.4

C

40

D

0.04

Text Solution

Verified by Experts

The correct Answer is:
A


Decrease in pressure of HI
= 0.2 - 0.04
= 0.16 atm
`K_(p)=(P_(H_(2))xxP_(I_(2)))/(P_(HI)^(2))`
`=(0.08"atm"xx0.08"atm")/(10.04"atm"^(2))=4.0`
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