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Gaslaws

# Gaslaws - o atm = 760 mm Hg 760 torr = 1.01325 x 105 Pa =...

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characteristics of gas  -   possible for substance to coexist as solid, liquid, and gas at the same time vapor - gaseous form of a substance normally existing as liquid/solid expands to fill the container it’s in (gas volume = volume of container) pressure added to gas >> gas gets compressed easily >> volume decreases form homogeneous mixtures (regardless of type of gases involved) pressure  - force acted upon a given area P = F/A newton (N) - SI unit for force, kg-m/s2 pascal (Pa) - SI unit for pressure, N/m2 o kPA = 1000 Pa o bar = 105 Pa, approximate atmospheric pressure at sea level barometer - invented by Evangelista Torricelli, measures atmospheric pressure o manometer - used to measure pressure of liquids/gases, similar to barometer standard atmospheric pressure = pressure needed to support column of mercury 760 mm high
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Unformatted text preview: o atm = 760 mm Hg, 760 torr = 1.01325 x 105 Pa = 101.325 kPa o 1 torr = 1 mm Hg Boyle’s Law - pressure-volume relationship • volume of gas (at constant temperature) inversely proportional to pressure • P1V1 = P2V2 Charle’s Law - temperature-volume relationship • volume of gas (at constant pressure) directly proportional to temperature • V1/T1 = V2/T2 Avogadro’s Law - quantity-volume relationship • law of combining volumes - at given pressure/temperature, volumes of reacting gases exist in simple ratios • equal volumes of gases at same temperature/pressure have equal numbers of molecules • volume of gas (at constant pressure/temperature) directly proportional to number of moles of gas • V = constant x n...
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