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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: wannabe1 on December 05, 2010, 07:44:23 PM

Title: More Ideal Gas
Post by: wannabe1 on December 05, 2010, 07:44:23 PM
I need to rank these gases according to how closely they resemble an ideal gas:
He, NH3, Ne, CO, N2

So I look at forces and at density and polarity.  So I get from greatest to least:
He, Ne, N2, NH3, CO
but this is incorrect.
I know that He, Ne, N2 are nonpolar and solving for their density I get that He < Ne < N2
NH3 and CO are polar and solving for their density I get that NH3 < CO.

What am I doing wrong?
Title: Re: More Ideal Gas
Post by: tamim83 on December 05, 2010, 10:49:28 PM
What intermolecular force does NH3 have but CO does not? 
Title: Re: More Ideal Gas
Post by: wannabe1 on December 05, 2010, 11:25:17 PM
hydrogen bonding right?, so would that make NH3 less like an ideal gas than CO?
Title: Re: More Ideal Gas
Post by: wannabe1 on December 05, 2010, 11:27:13 PM
Yep, that worked out thank you for your help.
Title: Re: More Ideal Gas
Post by: tamim83 on December 06, 2010, 08:12:59 AM
No problem, happy to help :)