chapter5tro - CHEMISTRY 161 Chapter 5 Classification of...

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Unformatted text preview: CHEMISTRY 161 Chapter 5 Classification of Matter solid liquid gas 1. Gases substances that exist in the gaseous phase under normal atmospheric conditions T = 25 o C p = 1 atm HF, HCl, HBr, HI CO, CO 2 CH 4 , NH 3 , H 2 S, PH 3 NO, NO 2 , N 2 O SO 2 Jupiter (H 2 , He) Io (SO 2 ) Helix Nebula Orion Nebula 2. Pressure molecules/atoms of gas are constantly in motion Ar EXP I Atmospheric Pressure Standard Atmospheric Pressure pressure of the atmosphere is balanced by pressure exerted by mercury 760 mm at 273 K at sea level 1 atm = 760 mm Hg = 760 torr barometer Torricelli pressure = force area p = F / A [p] = Nm-2 = kg m-1 s-2 = Pa SI units manometer pressure measurement 3. Gas Laws 3.1. pressure p versus volume V 3.2. temperature T versus volume V 3.3. volume V versus amount n p, V, T, n 3.1. Boyles Law pressure volume relationship (temperature is constant) Boyle (1627-1691) p 1/V EXP II p 1/V p = const/V p V = const p 2 V 2 = const p 1 V 1 = const p 1 V 1 = p 2 V 2 3.2. Gay-Lussacs Law temperature volume relationship (pressure is constant) Gay-Lussac (1778-1850) V T EXP III V T V = const T V/T = const V 2 / T 2 = const V 1 / T 1 = const V 1 / T 1 = V 2 / T 2 3.3. Avogadros Law amount volume relationship (pressure and temperature are constant) Avogadro (1776-1856) 2 H 2 (g) + O 2 (g) 2 H 2 O(l) n V n V n = const V n/V = const n 2 / V 2 = const n 1 / V 1 = const n 1 / V 1 = n 2 / V 2 SUMMARY 3.1. Boyles Law 3.2. Gay-Lussacs Law 3.3. Avogadros Law p 1/V n V V T (1) p 1/V...
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chapter5tro - CHEMISTRY 161 Chapter 5 Classification of...

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