1 / 6

Dalton’s Law of Partial Pressures

Dalton’s Law of Partial Pressures. Chapter 11 – Section 2 - Physical Characteristics of Gases. Dalton’s Law of Partial Pressures. Partial Pressure: The pressure of each gas in a mixture Dalton’s Law of Partial Pressures

salene
Download Presentation

Dalton’s Law of Partial Pressures

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Dalton’s Law of Partial Pressures Chapter 11 – Section 2 - Physical Characteristics of Gases

  2. Dalton’s Law of Partial Pressures • Partial Pressure: • The pressure of each gas in a mixture • Dalton’s Law of Partial Pressures • The total pressure of a mixture of gases is equal to the sum of the partial pressures of the component gases Ptotal=P1 + P2 + P3 +…..

  3. Dalton’s Law of Partial Pressures • Most often used to determine the pressure of a gas collected by water displacement • Patmosphere = Pgas + Pwater • Water vapor pressure varies with temperature – can be found on page R63

  4. A practice problem • Some hydrogen gas is collected over water at 20.00C. The partial pressure of hydrogen is determined to be 742.5 torr. What is the barometric pressure at the time the gas is collected? • Barometric pressure = Atmospheric pressure • Water vapor pressure is 17.5 torr • Patmosphere = Pgas + Pwater • Patmosphere = 742.5 + 17.5 • Patmosphere = 760.0 torr

  5. Your turn! • Helium gas is collected over water at 25oC. What is the partial pressure of the helium, given that the barometric pressure is 750.0 mmHg? • 726.2 mmHg

  6. Homework • Page 371 10+11

More Related