Which of the following compounds will behave least like an ideal gas at low temperature? Why so?

a) He
b) SO2
c) H2
d) N2
e) F2

1 Answer
May 11, 2016

Sulfur dioxide should be the least volatile, have the greatest intermolecular interaction, and thus its behaviour is LEAST like the ideal.


As a scientist you should check the boiling points of the gases. Clearly, the one that is most involatile is least like the ideal. Given that sulfur dioxide has the most electrons, there is greater opportunity for Van der Waals interactions, and deviation from ideality.