Gases - Gases P V T n Em pi rica l Ga s La ws Ide al Ga s...

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Unformatted text preview: Gases P V T n Em pi rica l Ga s La ws Ide al Ga s La w Mi xt ur es Ma the ma tica l De sc ript ion s Ki ne tic En er gy Mo lec ul ar Sp ee d Re al Ga se s Ap pl ica tion s KM- Mo de l of Ga se s Be ha vi or & Pr op er ties Highly compressible. Occupy the full volume of their containers. When gas is subjected to pressure, its volume decreases. Gases always form homogeneous mixtures with other gases. Gases only occupy about 0.1 % of the volume of their containers. General Characteristics of Gases General Characteristics of Gases Four Physical Quantities for Gases Phys. Qty. Symbol SI unit Other common units pressure P Pascal (Pa) atm, mm Hg, torr, psi volume V m 3 dm 3 , L, mL, cm 3 temp. T K C, F moles n mol Atmosphere Pressure and the Barometer Figure 10.2: Pressure Figure 10.2: Pressure A F P = Standard atmospheric pressure = 760 mm of Hg 1 atm = 760 mmHg = 760 torr = 101.325 kPa. Units: Force and Pressure Closed Systems => manometers Figure 10.3: Pressure Figure 10.3: Pressure Figure 10.7: The Pressure-Volume Relationship: Boyles Law The Gas Laws The Gas Laws The Pressure-Volume Relationship: Boyles Law Mathematically: A sample of gas contained in a flask with a volume of 4 The Gas Laws The Gas Laws P V 1 constant = constant = PV 2 2 1 1 V P V P = A sample of gas contained in a flask with a volume of 1.53 L and kept at a pressure The Temperature-Volume Relationship: Charless Law Charless Law: the volume of a fixed quantity of gas at constant pressure increases as the temperature increases....
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Gases - Gases P V T n Em pi rica l Ga s La ws Ide al Ga s...

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