gas laws 14 4 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Gas Laws 14.4 PowerPoint Presentation
Download Presentation
Gas Laws 14.4

Loading in 2 Seconds...

play fullscreen
1 / 15

Gas Laws 14.4 - PowerPoint PPT Presentation


  • 145 Views
  • Uploaded on

Gas Laws 14.4. Dalton’s Law. The contribution each gas in a mixture makes to the total pressure is called the partial pressure exerted by that gas. Dalton’s Law. In a mixture of gases, the total pressure is the sum of the partial pressures of the gases. Dalton’s Law.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Gas Laws 14.4' - ray


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
dalton s law
Dalton’s Law
  • The contribution each gas in a mixture makes to the total pressure is called the partial pressure exerted by that gas.
dalton s law1
Dalton’s Law
  • In a mixture of gases, the total pressure is the sum of the partial pressures of the gases.
dalton s law2
Dalton’s Law
  • Dalton’s law of partial pressures states that, at constant volume and temperature, the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of the component gases.
dalton s law3
Dalton’s Law
  • Three gases are combined in container T.
dalton s law4
Dalton’s Law
  • The partial pressure of oxygen must be 10.67 kPa or higher to support respiration in humans. The climber below needs an oxygen mask and a cylinder of compressed oxygen to survive.
graham s law
Graham’s Law
  • Graham’s Law
    • How does the molar mass of a gas affect the rate at which the gas effuses or diffuses?
graham s law1
Graham’s Law
  • Diffusion is the tendency of molecules to move toward areas of lower concentration until the concentration is uniform throughout.
graham s law2
Graham’s Law
  • Bromine vapor is diffusing upward through the air in a graduated cylinder.
graham s law3
Graham’s Law
  • After several hours, the bromine has diffused almost to the top of the cylinder.
graham s law4
Graham’s Law
  • During effusion, a gas escapes through a tiny hole in its container.
    • Gases of lower molar mass diffuse and effuse faster than gases of higher molar mass.
graham s law5
Graham’s Law
  • Thomas Graham’s Contribution
    • Graham’slaw of effusion states that the rate of effusion of a gas is inversely proportional to the square root of the gas’s molar mass. This law can also be applied to the diffusion of gases.
graham s law6
Graham’s Law
  • Comparing Effusion Rates
    • A helium filled balloon will deflate sooner than an air-filled balloon.
graham s law7
Graham’s Law
  • Because the rate of effusion is related only to a particle’s speed, Graham’s law can be written as follows for two gases, A and B. (The gas with the least mass should be A)
graham s law8
Graham’s Law
  • Helium effuses (and diffuses) nearly three times faster than nitrogen at the same temperature.