A vessel of volume 2000cm3 contains 0.1 mole of O2 and 0.2 mole of CO2. If the temperature of the mixture is 300k, find its pressure.
A
1.25×105Pa
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B
2.25×105Pa
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C
3.25×105Pa
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D
4.25×105Pa
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Solution
The correct option is A1.25×105Pa Given: T=300kV=2000cm3
Total pressure =PO2+PCO2P=n1RTV+n2RTVP=(n1+n2)(RT)V
[Because DOF doesn't appear in the ideal gas equation so it doesn't matter what gas is being used] P=0.1+0.2×8.3×3002000×10−6=1.25×105Pa