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# Chapter 14 - Chapter 4 Introduction to Gases Problems...

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Chapter 4 Introduction to Gases Problems 15,25,27,31,33,35,37,39,41,43,51,53 4.1 Properties of Gases 1. Gases may be compressed 2. Gases expand to fill their container 3. Gases have low density 4. Gases may be mixed 5. Gases exert pressure on the walls of a container 4.2 Kinetic Theory of Gases (for an ideal gas) 1. Gas particles move in straight lines 2. The particles collide with no energy loss 3. Gas particles are far apart 4. The particle volume is small 5. The particles do not interact (no attraction)

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4.3 Gas Measurements Pressure: The force exerted on an area Pressure Units: 1 atm = 760 torr = 760 mm Hg Temperature Units: Kelvin (why Kelvin??) Volume Units: liters Standard Temperature and Pressure (STP): 0 Ε C and 1 atm How can you easily make STP conditions?
4.4 The Volume-Temperature Law (Charles’ Law) The volume of a gas is directly proportional to it’s absolute temperature. V % T increase T, increase V or V = kT (k is a constant) For 2 different temperatures: V 1 = kT 1 and V 2 = kT 2 or V 1 /T 1 = V 2 /T 2 or V 2 = (V 1 T 2 )/T 1

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Chapter 14 - Chapter 4 Introduction to Gases Problems...

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