Lecture 18 Kinetic Molecular Theory &amp; Real Gasses

# Lecture 18 Kinetic Molecular Theory &amp; Real Gasses -...

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Lec-21: Kinetic Molecular Theory & Real Gasses Roy A. Lacey, Stony Brook University; Che 131, Fall 2010 1

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Gas Laws - Recap ressure # Moles V nRT Pressure PV olume Temperature Volume 11 2 2 2 PV PV R TT T =⇒ = For 1 mole of gas 12 Roy A. Lacey, Stony Brook University; Che 131, Fall 2010 2
Gas Laws For fixed T & n Boyles Law 11 2 2 PV PV R =⇒ = 12 TT T PV R = 1 V P 21 2 PP V = Roy A. Lacey, Stony Brook University; Che 131, Fall 2010 3

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Gas Laws For fixed P & n Charles Law 11 2 2 2 PV PV R TT T =⇒ = 12 2 VV V R T = The volume of a gas is irectly proportional to Kelvin directly proportional to Kelvin temperature and extrapolates to zero at zero Kelvin. Roy A. Lacey, Stony Brook University; Che 131, Fall 2010 4
Gas Laws The volume of a gas is directly proportional to Kelvin temperature and extrapolates to zero at zero Kelvin. Roy A. Lacey, Stony Brook University; Che 131, Fall 2010 5

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Gas Laws For fixed P & T Avagadro’s Law 11 2 2 1 PV PV nR Tn T n T =⇒= 12 2 VV V R nn n =⇒ = For a gas at constant temperature and pressure, the volume is directly proportional to the number of moles of gas (at low Roy A. Lacey, Stony Brook University; Che 131, Fall 2010 6 pressures).
Kinetic Molecular Theory 1. Gas molecules have tiny volumes compared with their container’s volume.

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Lecture 18 Kinetic Molecular Theory &amp; Real Gasses -...

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