Fewpal
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At a certain temperature and total pressure of 105 Pa, iodine vapour contains 40% by volume of I atoms

Calculate Kp for the equilibrium.

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Best answer

Partial pressure of I atoms, 

Partial pressure of I2 molecules, 

Now, for the given reaction, 

+2 votes
by (15.0k points)

Total Pressure,P=105 Pa
As 40 % molecules are I atoms 60% are I2 molecules.
Partial pressure of I(g),pI =0.4 x 105 Pa
Partial pressure of I(g),pI2 =0.6 x 105 Pa

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