chapter12 - 12 Gases and Kinetic Molecular Theory 1 CHAPTER...

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
2 Gases and Kinetic 12 Molecular Theory 1
Background image of page 1

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

View Full DocumentRight Arrow Icon
HAPTER GOALS CHAPTER GOALS 1. Comparison of Solids, Liquids, and Gases 2. Composition of the Atmosphere and Some ommon Properties of Gases Common Properties of Gases 3. Pressure oyle’s Law: The Volume ressure Relationship 4. Boyle s Law: The Volume-Pressure Relationship 5. Charles’ Law: The Volume-Temperature elationship; The Absolute Temperature Scale Relationship; The Absolute Temperature Scale 6. Standard Temperature and Pressure . he Combined Gas Law Equation 7. The Combined Gas Law Equation 8. Avogadro’s Law and the Standard Molar Volume 2
Background image of page 2
HAPTER GOALS CHAPTER GOALS 9. Summary of Gas Laws: The Ideal Gas Equation 10. Determination of Molecular Weights and Molecular ormulas of Gaseous Substances Formulas of Gaseous Substances 11. Dalton’s Law of Partial Pressures 2 ass olume Relationships in Reactions Involving 12. Mass-Volume Relationships in Reactions Involving Gases 3. he Kinetic- olecular Theory 13. The Kinetic Molecular Theory 14. Diffusion and Effusion of Gases 5. eal Gases: Deviations from Ideality 15. Real Gases: Deviations from Ideality 3
Background image of page 3

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

View Full DocumentRight Arrow Icon
Comparison of Solids, Liquids, and Gases • The density of gases is much less than that f solids or liquids of solids or liquids. Densities /mL) Solid Liquid Gas (g/mL) H 2 O 0.917 0.998 0.000588 CCl 4 1.70 1.59 0.00503 { Gas molecules must be very far apart 4 compared to liquids and solids.
Background image of page 4
Composition of the Atmosphere and Some Common Properties of Gases Composition of Dry Air Gas % by Volume N 78.09 2 O 2 20.94 r 93 Ar 0.93 CO 2 0.03 He, Ne, Kr, Xe 0.002 CH 0.00015 5 4 H 2 0.00005
Background image of page 5

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

View Full DocumentRight Arrow Icon
ressure Pressure • Pressure is force per unit area. –l b / i n 2 – N/m 2 • Gas pressure as most people think of it. 6
Background image of page 6
ressure Pressure • Atmospheric pressure is measured using a barometer. • Definitions of standard pressure 6 cm Hg 76 cm Hg – 760 mm Hg 60 torr 760 torr –1 a tmosphe re 01 3 kPa 101.3 kPa 7 Hg density = 13.6 g/mL
Background image of page 7

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

View Full DocumentRight Arrow Icon
Boyle’s Law: The Volume-Pressure Relationship •V 1/P or = k (1/P) or PV = k • V= k (1/P) or PV = k •P 1 V 1 = k 1 for one sample of a gas. 2 V 2 = k 2 for a second sample of a gas. = k r the same sample of a gas at k 1 k 2 for the same sample of a gas at the same T. hus we can write Boyle’s Law • Thus we can write Boyle s Law mathematically as P 1 V 1 = P 2 V 2 8
Background image of page 8
Boyle’s Law: The Volume-Pressure Relationship Example 12-1: At 25 o C a sample of He has a volume of 4.00 x 10 2 mL under a pressure of 7.60 x 10 2 torr. What volume would it occupy under a pressure of 2.00 atm at the same T? V P V P 2 2 1 1 = P V P V 2 1 1 2 = ( )( ) torr 1520 mL 400 torr 760 = 9 mL 10 00 . 2 2 × =
Background image of page 9

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

View Full DocumentRight Arrow Icon
Boyle’s Law: The Volume-Pressure Relationship • Notice that in Boyle’s law we can use any pressure or volume units as long as we consistently use the same units for both P 1 and P 2 or V 1 and V 2 . • Use your intuition to help you decide if the volume will go up or down as the pressure is changed and vice versa.
Background image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 05/24/2011 for the course ENGINEERIN 1 taught by Professor Lee during the Spring '11 term at Sungkyunkwan.

Page1 / 64

chapter12 - 12 Gases and Kinetic Molecular Theory 1 CHAPTER...

This preview shows document pages 1 - 11. Sign up to view the full document.

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