Lecture #11 - Chemistry 2A-c W2009 (Ch6-5)76 III....

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Chemistry 2A Chemistry 2A -c W2009 c W2009 (Ch6 (Ch6 -5)76 5)76 Ideal gas equation: PV=nRT For fixed n: Ideal gas assumes very large distance between molecules (low density). Thus, no inter-molecular force exists between molecules. Valid at high T and low P. Gases are real and under conditions of low T and high P, gases have a high density and are expected to deviate from the ideal gas law. In such cases, the intermolecular forces between molecules can no longer be ignored. 2 2 2 1 1 1 T V P T V P = III. Applications of Ideal Gas Equation Example : An aerosol can at 1.5 atm and 25 o C. What is the pressure when heated to 450 o C? Use the equation,P 1 V 1 T 2 =P 2 V 2 T 1 Because V 1 = V 2 , we have: (1.5 atm) (723K) =(P 2 ) (298K) P 2 = 3.6 atm
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Chemistry 2A Chemistry 2A -c W2009 c W2009 (Ch6 (Ch6 -6)77 6)77 The volume of a gas is proportional to the number of molecules of gas in the sample. The proportion of reactant gases by volume is the same as the proportion of reactant gas molecules. When measured at the same pressure and temperature, the volume of a gas reactants and products are in ratios of simple whole numbers. Example: H 2 (g) + Cl 2 (g) 2 HCl (g) Stoichiometric (mol) ratio = volume ratio 2.5 L 2.5 L 5.0 L 1 : 1 : 2 = 1 : 1 : 2 3 H 2 (g)+ N 2 (g) 2NH 3 (g) Stoichiometric (mol) ratio = volume ratio 7.5 L 2.5 L 5.0 L 3 : 1: 2 = 3: 1 : 2
Background image of page 2
Chemistry 2A Chemistry 2A -c W2009 c W2009 (Ch6
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/25/2009 for the course CHEM chem 2a taught by Professor Ng during the Winter '09 term at UC Davis.

Page1 / 9

Lecture #11 - Chemistry 2A-c W2009 (Ch6-5)76 III....

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online