Q.

A vessel contains 0.5 g of hydrogen and 0.8 g of oxygen. The volume of vessel is  528 m3 while its temperature is maintained at 300 K. Then the pressure of the mixture is MH2=2,  MO2=32,  R=253J−mol−1K−1.

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a

385  Nm−2

b

38.5  Nm−2

c

3850  Nm−2

d

3.85 Nm−2

answer is C.

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Detailed Solution

By Dalton’s law,P=PH2+PO2 =nH2RTV+nO2RTV=0.52+0.832253300528=3850Nm−2
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A vessel contains 0.5 g of hydrogen and 0.8 g of oxygen. The volume of vessel is  528 m3 while its temperature is maintained at 300 K. Then the pressure of the mixture is MH2=2,  MO2=32,  R=253J−mol−1K−1.