A Gas

A Gas PowerPoint PPT Presentation


  • 179 Views
  • Updated On :
  • Presentation posted in: General

Download Presentation

A Gas

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


1. Unit 5: Gases and Gas Laws

3. The Meaning of Temperature Kelvin temperature is an index of the random motions of gas particles (higher T means greater motion.)

4. Kinetic Energy of Gas Particles

5. Measuring Pressure

6. An Early Barometer

7. The Aneroid Barometer

8. Pressure Is caused by the collisions of molecules with the walls of a container is equal to force/unit area SI units = Newton/meter2 = 1 Pascal (Pa) 1 standard atmosphere = 101.3 kPa 1 standard atmosphere = 1 atm = 760 mm Hg = 760 torr

9. Units of Pressure

10. The Nature of Gases Gases expand to fill their containers Gases are fluid – they flow Gases have low density 1/1000 the density of the equivalent liquid or solid Gases are compressible Gases effuse and diffuse

11. Standard Temperature and Pressure “STP” P = 1 atmosphere, 760 torr, 101.3 kPa T = 0°C, 273 Kelvins The molar volume of an ideal gas is 22.42 liters at STP

14. Converting Celsius to Kelvin

15. Charles’s Law The volume of a gas is directly proportional to temperature, and extrapolates to zero at zero Kelvin. (P = constant)

16. A Graph of Charles’ Law

17. Gay Lussac’s Law

18. A Graph of Gay-Lussac’s Law

20. Standard Molar Volume

21. Ideal Gas Law PV = nRT P = pressure in atm V = volume in liters n = moles R = proportionality constant = 0.08206 L atm/ mol·K T = temperature in Kelvins

22. Gas Density

23. Density and the Ideal Gas Law

25. Ideal Gases (continued)

27. Deviations from Ideal Behavior

29. Diffusion

31. Graham’s Law Rates of Effusion and Diffusion

  • Login