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Topic: More Ideal Gas  (Read 17990 times)

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Offline wannabe1

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More Ideal Gas
« 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?

Offline tamim83

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Re: More Ideal Gas
« Reply #1 on: December 05, 2010, 10:49:28 PM »
What intermolecular force does NH3 have but CO does not? 

Offline wannabe1

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Re: More Ideal Gas
« Reply #2 on: December 05, 2010, 11:25:17 PM »
hydrogen bonding right?, so would that make NH3 less like an ideal gas than CO?

Offline wannabe1

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Re: More Ideal Gas
« Reply #3 on: December 05, 2010, 11:27:13 PM »
Yep, that worked out thank you for your help.

Offline tamim83

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Re: More Ideal Gas
« Reply #4 on: December 06, 2010, 08:12:59 AM »
No problem, happy to help :)

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