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Question

For the dissociation of phosgene gas, the value of Kp at 100 is 6.7×109atm. The fraction of phosgene dissociated at this temperature when 1 mole of phosgene is placed in 100 litre vessel containing nitrogen at partial pressure of 1 atm is X×104. 100X is__________.

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Solution


COCl2COCl2
Initial number of moles
1
0
0
Equilibrium number of moles
1xxx
KP=KC(RT)Δn
6.7×109=KC(0.0821×373)
KC=2.19×1010
x2100001x100××2.191010
x100=1.479×105
x=1.479×104=X×104
X=1.48
100X=148

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