6 Oct 09

6 Oct 09 - Chemistry 6 Oct 09 Ch. 5.1 Pressure, P =...

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Unformatted text preview: Chemistry 6 Oct 09 Ch. 5.1 Pressure, P = Force/area-force per unit area Barometer: P = pgh-Torriceli Barometer|-Manometer Units of pressure-standard atmosphere-mmHg/torr-psi (lb/in^2)-Pascal (Pa= N/m^2)-Bar (ba, b) Conversions of Pressure Standard atmosphere- atm-1 atm = 760 mmHg-1 atm = 760 torr (1 torr= 1mmHg?)-1 atm = 14.7 psi-1 atm = 101325 Pa-1 bar = 100,000 Pa (1mb = 100 Pa) Sample Exercise 5.1: Pressure Conversion, p. 181-The pressure of a gas is measured as 49 torr. Represent this pressure in both atm and Pa. 49 torr = 49 x 1 torr = 49 x (1/760)atm = 6.4 x 10^-2 atm 6.4 x 10^-2 atm = 6.4 x 10^-2 101325 Pa = 6.5 x 10^3 Pa Law of Gases-Boyle's Law P 1- V 1 = P 2 V 2-Charles' Law V 1 /T 1 = V 2 /T 1-Gay-Lussac's Law P 1 /T 1 = P 2 /T 2-Avogadro's Law V 1 /n 1 = V 2 /n 2 5.1 Boyle's Law product of pressure times volume is a constant, provided the temperature remains the same 1. PV= k (k is a constant) 2. P is inversely related to V, P= k/V 3. The P-V graph is hyperbolic.-Another format of Boyle's Law P 1 V 1 = k = P 2 V 2 P 1 V 1 =P 2 V 2 5.2 Gay-Lussac's Law:-pressure of a fixed mass and fixed volume of a gas is directly proportional to the gas' temperature...
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This note was uploaded on 08/29/2011 for the course CHEM 101 taught by Professor Luikang during the Fall '10 term at SPSU.

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6 Oct 09 - Chemistry 6 Oct 09 Ch. 5.1 Pressure, P =...

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