Unit 3- Notes 3-a - Keywords Ideal behaviour Non ideal...

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Keywords Ideal behaviour Non ideal behaviour Boyle temperature Coulomb’s Law Polarizability ion pair ion-dipole dipole-dipole ion-induced dipole dipole-induced dipole induced dipole-i.d. London dispersion forces van der Waals’ forces
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The volume actually occupied by the particles in a gas is relatively small at low pressures, but it can be a significant fraction of the total volume at high pressure. In O 2 , for example, the gas molecules occupy 0.13% of the total volume at 1.00 atm but 17% of the volume at 100 atm. What is ‘excluded volume’?
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At high pressures, and low volumes, the intermolecular distances can become quite short, and attractive forces between molecules becomes significant Neighboring molecules exert an attractive force, which will minimize the interaction of molecules with the container walls. And the apparent pressure will be less than ideal pressure.
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van der Waals equation :
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Real gases deviate from ideal behaviour: Under what conditions gases behave non ideal At high pressures, and low volumes, the intermolecular distances can become
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This note was uploaded on 04/08/2010 for the course CHM CHM140Y5 taught by Professor Dr.krish during the Spring '09 term at University of Toronto- Toronto.

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Unit 3- Notes 3-a - Keywords Ideal behaviour Non ideal...

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