Chapter 14 The Behavior of Gases. Section 14.4 Gases: Mixtures & Movement l\

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Presentation transcript:

Chapter 14 The Behavior of Gases

Section 14.4 Gases: Mixtures & Movement l\

#7 Dalton’s Law of Partial Pressures For a mixture of gases in a container, P Total = P 1 + P 2 + P P 1 represents the “partial pressure”, or the contribution by that gas. Dalton’s Law is particularly useful in calculating the pressure of gases collected over water.

#7 Dalton’s Law of Partial Pressures For a mixture of gases in a container, P Total = P 1 + P 2 + P Dalton’s Law is particularly useful in calculating the pressure of gases collected over water.

Collecting a gas over water Connected to gas generator

Collecting 2 gases: water vapor & H 2 P Total = P 1 + P 2

If the first three containers are all put into the fourth, we can find the pressure in that container by adding up the pressure in the first 3: 2 atm + 1 atm + 3 atm = 6 atm