Chapter 05 - Gas Laws and Kinetic-Molecular Theory -...

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5-1Chapter 5Chapter 5Gases and the Kinetic-Molecular TheoryGases and the Kinetic-Molecular Theory
5-2Kinetic-Molecular Gas TheoryKinetic-Molecular Gas TheoryPressureHow can individual gas molecules create pressure?Boyle’s lawIncrease in gas pressure causes a decrease in volumeWhat happens to gas particles when they become compressed?Dalton’s law of partial pressureWhy does each gas contribute to the pressure in proportion to its mole fraction?Charles’s lawA change in temperature results in a change in volumeWhat effect does an increase in temperature have on the gas particlesthat results inan increase in volume?Avogadro’s lawGas pressure or volume depends on the moles of a gas, not on the type of the gasWhy do gas molecules occupy the same space on a molar basis?Why do heavier gases not exert more pressure than lighter gases?
5-3Kinetic Molecular Theory of GasesKinetic Molecular Theory of GasesBehavior of Gases at the Molecular LevelBehavior of Gases at the Molecular Level31.Gases are made up of small atoms or molecules that are in constant andrandom motion.2.The distance of separation is very large compared to the size of the atomsor moleculesthe gas is mostly empty space.3.All gas particles behave independently.no attractive or repulsive forces exist between them1.Gas particles collide with each other and with the walls of the containerwithout losing energy.The energy is transferred from one atom or molecule to another2.The average kinetic energy of the atoms or molecules is proportional toabsolute temperature.K.E. = 1/2mv2as temperature goes up, the speed of the particles goes upKE increases
5-44Kinetic Molecular Theory of GasesKinetic Molecular Theory of GasesGases are easily compressibleA gas is mostly empty spaceGases will expand to fill any available volumeGases move freely with enough energy to overcomeattractive forces

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Term
Spring
Professor
BaishakhiDas,MS.
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