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Topic: Ideal Gas Law  (Read 2961 times)

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Offline pleasehelpme

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Ideal Gas Law
« on: April 24, 2008, 07:04:50 PM »
When using the ideal gas law, will n always be in moles, and will P always be in kpa?  Can either be in kg or grams, or even lbs. Please help.
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Offline enahs

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Re: Ideal Gas Law
« Reply #1 on: April 24, 2008, 07:54:32 PM »
Your units can be almost anything.
As long as you use R with the appropriate units to cancel out.
http://en.wikipedia.org/wiki/Ideal_gas_constant
Look on the right for a list of R with different units (they all represent the same thing just in different units).

N is almost always in mols. P is in kPa and atm quite commonly.
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Offline Borek

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Re: Ideal Gas Law
« Reply #2 on: April 25, 2008, 02:33:49 AM »
http://www.chemicalforums.com/index.php?topic=26103

n in moles seems to be the best choice, as otherwise you will have different value of R for every gas. Other things can be anything.
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