Calculating Partial Pressures of Air Chlorine Mixture

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nightcrawler Power-User Join Date: Jan 2010 Location: Pakistan Posts: 100	Calculating Partial Pressures of Air Chlorine Mixture 03/16/2015 1:02 PM
	If I have 100kg mixture of air* & chlorine, total pressure of system is 60mmH2O how can I get either mole fraction ratio or partial fraction ratio. The real problem I am facing is that air too is mixture how then can I get its vapour pressure at say 25C temperature dry air may be considered to be 78% Nitrogen ( M.W. = 28.0), 21% Oxygen (M.W. = 32.0), and 1% Argon (M.W. = 40.0) Thus Average Molecular Weight of Air = (.78 28) + (.21 * 32) + (.01 * 40) = 28.96g/mol __________________ Chemical Engineers are like high Temperatures & high Pressures
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WJMFIRE Guru Join Date: Apr 2009 Location: USA, Florida Posts: 1587 Good Answers: 125	#1 Re: Calculating Partial Pressures of Air Chlorine mixture 03/16/2015 1:53 PM
	Looks like homework to me. Try this, which one obtains from a google search. __________________ An obstacle is something you see when you take your eyes off the goal.
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Kulas Power-User Join Date: Dec 2014 Posts: 418 Good Answers: 3	#2 Re: Calculating Partial Pressures of Air Chlorine Mixture 03/17/2015 12:27 PM
	Use PV=nRT instead of PV=mR'T. Then works on PV=( nair+n cl) RT= PV air + PV cl __________________ "When I thought I exceeded to be wise but wisdom was far from me" -King Solomon
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Codemaster Guru Join Date: Jul 2005 Location: Stoke-on-Trent, UK Posts: 4460 Good Answers: 135	#3 Re: Calculating Partial Pressures of Air Chlorine Mixture 03/26/2015 7:38 AM
	From the information given, you can't get either. You only give total mass, but you need to know the masses of air and chlorine, then you can work out mole fraction and partial pressure of each. __________________ Give masochists a fair crack of the whip
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Codemaster (1); Kulas (1); WJMFIRE (1)

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