Real Gases Problem EK Chem 1001 (209)

[Spiker]

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Which of the following gases, when compared under identical condition, is likely to be the least ideal?

A O2
B O3
C CO2
D CH3OH

So the book answer is D because D is can form hydrogen bond and others cant. However I think B should have worked because it is large, take alot of space and is also polar (which EK says it is not).

Later I figured out that CO2 may not be as large as CH3OH, but even now I can not figure out exactly which one is larger and more polar to arrive at a definitive answer

 

[loveoforganic]

D is the only polar molecule. A, B, and C are all nonpolar.

 

[linkin06]

h bonds trump all

 

[Spiker]

D is the only polar molecule. A, B, and C are all nonpolar.

O3 is polar

 

[loveoforganic]

You're right, my b.

 

[sv3]

from all the questions i've seen on this, always look for intermolecular forces first, then consider size. agree with above poster about H bonds.