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Question

For reaction:
3Fe(s)+4H2O(g)Fe3O4+4H2(g)
at 1200K it was observed that partial pressure of water vapours is 15 torr and total pressure at equilibrium is 31 torr the volume of kp for the raction at 1200K is ?

A
9.7
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B
0.001
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C
1.3
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D
0.08
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Solution

The correct option is C 1.3
Given:- 3Fe+4H2Og)Fe3O4+4H2( g) at 1200 K
PH2O=15 Torr PTotal=31 Torr PTotal =PH2O+PH2=15+PH2OPH2O=3115=16 Torr
kp=(PH2)4(PH2O)4Kp=(16)4(15)4Kp=1.295Kp1.3S0,(c)1.3 is correct answer

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