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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: s.p.q.r on July 09, 2007, 07:26:15 AM

Title: Moles in Gas
Post by: s.p.q.r on July 09, 2007, 07:26:15 AM

Hi,

Does the number of Moles in an ideal gas dictate how much it will expand when heated?

Im after a simple answer.

Cheers in advance.  :-*

Title: Re: Moles in Gas
Post by: AWK on July 09, 2007, 07:58:42 AM

pV=nRT
At constant pressure volume of ideal gas is proportional to its temperature

Title: Re: Moles in Gas
Post by: s.p.q.r on July 09, 2007, 09:07:41 AM

Thanks but that wasnt the answer to the question.
I mean, if 2 different ideal gases, with different number of moles, were heated under the same conditions would the level of expansion be different for the different gases?

Please get back.

Cheers.

Title: Re: Moles in Gas
Post by: Borek on July 09, 2007, 10:48:06 AM

Define level of expansion. If you mean ratio of final volume to the starting volume - you may easily derive it from pV=nRT.

Title: Re: Moles in Gas
Post by: s.p.q.r on July 09, 2007, 01:58:02 PM

OK thanks for your replies. But im not a chem student and i don't want to work out this equation.
I really am looking for a yes or no answer.
Will a gas with a high number of moles expand more than a gas with a low level of moles?
Who can answer this?

Cheers in advance. 8)

Title: Re: Moles in Gas
Post by: AWK on July 10, 2007, 01:13:28 AM

For mixture of ideal gases the ideal gas equation also works