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Question

N2+3H22NH3, starting with one mole of nitrogen and 3 moles of hydrogen, at equilibrium 50% of each had reacted. If the equilibrium pressure is P, the partial pressure of hydrogen at equilibrium would be:

A
P2
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B
P3
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C
P4
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D
P6
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Solution

The correct option is A P2
The given reaction is N2+3H22NH31 3 0 ...initial0.5 1.5 1 ...at equilibrium
According to Dalton's law of partial pressure
Pi=XiPoi
XH2=1.53
Now partial pressure of H2,
PH2=1.53P=P2
Hence, correct option is a.

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