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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: s3a on September 15, 2009, 03:05:58 PM

Title: Which of the two gases, Cl2 or Ar, exerts a greater pressure?
Post by: s3a on September 15, 2009, 03:05:58 PM

I do not know how to do the following question:

Which of the two gases, Cl2 or Ar, exerts a greater pressure when one mole of gas is
placed in a 10.0 L container at 25.0 oC? Answer: [ P(Cl2) > P(Ar) ]

                       a / atm·L2·mol-2      b / L·mol-1
         DATA:
            Cl2              6.49                  0.562
            Ar               1.35                  0.0322

Any help would be greatly appreciated!
Thanks in advance!

Title: Re: Which of the two gases, Cl2 or Ar, exerts a greater pressure?
Post by: MrTeo on September 16, 2009, 12:54:56 AM

You only have to apply the Van der Waals equation with the values given (Argon could be also considered an ideal gas I think) and make a comparison between the results found.