Lecture_23_110911 - Lecture 23: The Ideal Gas Law Goals:...

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Lecture 23: The Ideal Gas Law Goals: Use the ideal gas law to solve for P, V, T or n of a gas when given three of the four variables in the ideal gas law. Use Dalton’s law of partial pressures to calculate the total pressure of a mixture of gases. Outline (Timberlake 7.7-7.9): ± Volume and Moles (7.7) ± The Ideal Gas Law (7.8) ± Partial Pressures (7.9) Problems for Extra Practice: 7.51, 7.53, 7.55, 7.57, 7.59, 7.61, 7.65, 7.67
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Properties of Gases • Gases are described in terms of four properties: pressure ( P ), volume ( V ), temperature ( T ), and amount ( n ).
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Molar Volume The molar volume of a gas • is measured at STP (standard temperature and pressure) • is 22.4 L for 1 mole of any gas
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What is the volume at STP of 4.00 g of CH 4 ? 1) 5.60 L 2) 11.2 L 3) 44.8 L Learning Check
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How many grams of He are present in 8.00 L of He at STP? 1) 25.6 g 2) 0.357 g 3) 1.43 g Learning Check
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Gases in Chemical Reactions The volume or amount of a gas at STP in a chemical reaction can be calculated from • STP conditions • mole factors from the balanced equation
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Guide to Problem Solving Reactions Involving Gases
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This note was uploaded on 01/18/2012 for the course CHEM 120A taught by Professor Leahmiller during the Fall '11 term at University of Washington.

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Lecture_23_110911 - Lecture 23: The Ideal Gas Law Goals:...

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