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Dalton’s Law

Dalton’s Law. P t = P 1 +P 2 +P 3 + ….. ( @ constant V & T) . Dalton’s Law-Example.

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Dalton’s Law

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  1. Dalton’s Law Pt = P1+P2+P3+ ….. ( @ constant V & T)

  2. Dalton’s Law-Example Air contains O2, N2, CO2, and trace amounts of other gases. What is the partial pressure of oxygen (POxygen) at sea level, if N2and CO2 pressures are 79.10 kPa, 0.94 kPa, respectively?

  3. Diffusion spreading of gas; gas particles move from areas of great concentration to areas with lower concentration until uniform.

  4. Diffusion What are some examples of diffusion?

  5. Effusion gas escapes a container through tiny holes or pores of a container.

  6. Effusion

  7. Diffusion & Effusion

  8. Diffusion vs Effusion

  9. Effusion if hole is small enough & gas particles big enough no effusion occurs.

  10. Effusion What are some examples of effusion?

  11. Graham’s Law Rate of Diffusion/Effusion : lighter gases move faster • Rate: speed, distance per time

  12. Graham’s Law http://www.youtube.com/watch?v=_oLPBnhOCjM

  13. Applying Graham’s Law • Which gas effuses faster, NH3 or CCl4? • Which gas effuses faster, CO2or NF3?

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