Week 7 book notes, chapter 18
Week 7 book notes, chapter 18 Chem 141
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This 2 page Class Notes was uploaded by Cassidy Zirko on Saturday October 17, 2015. The Class Notes belongs to Chem 141 at University of Montana taught by Mark Cracolice (P) in Fall 2015. Since its upload, it has received 27 views. For similar materials see College Chemistry 1 in Chemistry at University of Montana.
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Date Created: 10/17/15
Week 7 Professor Cracolice Chem 141 Chapter 18 How are Measurable Quantities Related in a Chemical Change When One or More of the Species is a Gas 101615 181 What Ratios of Gas Quantities Have Physical Significance 0 Unit for density of a liquid or a solid is g P m RT 0 Both appear in PV nRT V W 0 What Volume is Occupied by One of an Ideal Gas 0 Molar Volume MV the volume of a gas occupied by one more of gas molecules 0 Molar volume depends on temperature and pressure 0 Molar volume is not constant 0 Make sure you are using the molar volume of the given temperature and pressure 182 How can Amounts be Predicted in Reaction Involving Gases 0 Given quantity mole given mole wanted wanted quantity 0 First and third step in a is between mole and liters at a given temperature and pressure in a volume problem 0 Given volume I moles given moles I 0 Conversions can be made PVnRT 0 In gas stoichiometry given or wanted is a specific temperature and pressures 0 Solved in two steps based on order convert then solve or solve stoichiometry then convert to same temp and pressure 0 What if Reaction Involves only Gases O Avogadro s Law gas volume is directly proportional to the number moles at a constant temperature and pressure V CC n Ratios of volumes are the same as ratio of moles in a chemical equation 0 Volumes of individual gases react with the same ratios as the number of moles in an equation 0 Molar volumes will always cancel if given and wanted are at the same temperature and pressure 0 Both gas volumes must be measured at same temperature and pressure 0 Week 7 Professor Cracolice Chem 141 0 Given and wanted are at different temperatures and pressures P1V1P2V2 T1 T2 0 Then solve Lgiven I L wanted using stoichiometry