Gases - Section 11 The Gas Phase Kinetic Molecular Theory...

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Section 11The Gas PhaseKinetic Molecular TheoryKinetic Molecular Theory, KMT1.Gas Molecules are in constant,random, straight-line motion2.Molecular collisionswith surface causegas pressure3.Gas volume isdetermined by thecontainer
7.Intermolecular forces between gas moleculesare negligible.** Deviation from ideality at low temperature and high pressure
PressureForce exerted by a gas per unit area of container surfaceIncreases as molecular collision frequency increases (greater T and concentration)Increases as average collisionenergies increase (function of T)Units of measurement;1 atm ≡ 760 mmHg or 760 torrSTPStandard Temperature and Pressure1 atm (760 mm) and 0°C (273K)
The Gas LawsBoyle’s Law, at constant T and quantity…V α 1PV1P2V2P1=
Charles’ Law, at constant P and quantityV TV1T1V2T2=
Avogadro’s Law, at constant T and PV nV

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