In general, real gases behave most ideally at The behavior of real gases can be
ID: 229615 • Letter: I
Question
In general, real gases behave most ideally at The behavior of real gases can be described using the van der Waals equation [PA (n'a/V2)(V-nb) = nRT The values of a and b are given below for the two real gases carbon dioxide and xenon. The gas in which deviations from ideal behavior due to intermolecular forces are expected to be the largestis ressures and temperatures The gas that would be expected to behave least like an ideal gas at high pressures is a (L'atm/mol2)b (L/mol) 4.27x102 5.11x10-2 CO2 3.59 Xe 4.19 Submit Answer Retry Entire Group 2 more group attempts remainingExplanation / Answer
a) In general, real gases behave ideally at high temperature and low pressure.
b) since the value of "a" is higher for xenon, it has strong Van der Waals forces, and hence deviates largely from ideal behavior.
c) At high pressure PV is greater than RT by an amount equal to Pb. Since xenon has a higher value of b, it deviates from ideal behavior at high pressures.
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