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Question

Assuring Ideal behavior, find out the total pressure exerted by 2gm ethane and 3gm CO2, contained in a vessel of 8 litre capacity at 47C

A
0.334 atm
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B
0.934 atm
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C
2.06 atm
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D
0.434 atm
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Solution

The correct option is D 0.434 atm
Number of moles of Ethane (n1)=230=0.0667
Number of moles of CO2(n2)=344=0.0682
Total number of moles (n1+n2)=0.1349
Temperature = 273 + 47 = 320 k
According to Ideal Gas Equation,
PV = nRT
By Question, n=n1+n2
PV=(n1+n2)RT
or P=(n1+n2)RTV=0.1349×0.0821×3208
or,P=0.443 atm

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