Scan_Doc0097 - observations: Boyle's law: k V=-P V = bT V =...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
5.3 The IdeaL Gas Law 189 What is the mole ratio between 0 3 and 02? 2 mol 0 3 3 mol O 2 Now we can calculate the moles of 0 3 formed. 2 mol 0 3 0.50 mel-<'J2 X = 0.33 mol 0 3 3 mel-<'J2 What is the volume of 0 3 produced? Avogadro's law states that V = an, which can be rearranged to give V -=a n Since a is a constant, an alternative representation is V j V 2 -=a=- nj n2 where V j is the volume of nj moles of O 2 gas and V 2 is the volume of n2 moles of 0 3 gas. In this case we have .I nj = 0.50 mol .I v, = 12.2 L .I nz = 0.33 mol .I V 2 = ? Solving for V 2 gives ( n2) (0.33 mot) V 2 = - V j = 12.2 L = 8.1 L nj 0.50 mot Reality Check: Note that the volume decreases, as it should, since fewer moles of gas molecules will be present after O 2 is converted to 0 3 , SEE EXERCISES 5.43 AND 5.44 5.3 ~ The Ideal Gas Law We have considered three laws that describe the behavior of gases as revealed by exper- imental
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: observations: Boyle's law: k V=-P V = bT V = an (at constant P and n) (at constant T and P) (at constant T and n) Charles's law: Avogadro's law: These relationships, which show how the volume of a gas depends on pressure, temper-ature, and number of moles of gas present, can be combined as follows: V = R(~) R = 0.08206 L . atm K mol where R is the combined proportionality constant called the universal gas constant. When the pressure is expressed in atmospheres and the volume in liters, R has the value 0.08206 L . atm/K . mol. The preceding equation can be rearranged to the more familiar form of the ideal gas law: PV = nRT...
View Full Document

This note was uploaded on 12/13/2010 for the course CHEM 2301 taught by Professor Bill during the Spring '10 term at South Texas College.

Ask a homework question - tutors are online