chem102-4a

chem102-4a - C102-4a-W11 Chem 102- 01 PS 158 page 1 of 5...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
C102-4a-W’11 page 1 of 5 1/24/11 Chem 102- 01 PS 158 lecture 4a-Winter, 2011 Lec4a Midterm Exam #1 is on Friday, Jan 28 Review session on Wednesday 12-1 pm at PS607 Guide is posted in the website. Last time: 1) gases – properties, pressure 2) Kinetic molecular theory 3) Ideal gases: 4) gas stoichiometry 5) partial pressures Today: 0) Dalton’s Law of partial pressures 1) Law of Effusion 2) gas stoichiometry 3) nonideal gases 4) atmosphere chemistry LECTURE; Last time: (0) Partial pressures and gas mixtures Dalton’s Law of Partial Pressures: P tot Last time, we saw: X i = n i / n total = mole fraction (where n = total moles of gases) And using ideal gas equation: P i = X i P total Note that X i = 1 This justifies subtracting P H2O from P total of gases collected over water.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
C102-4a-W’11 page 2 of 5 1/24/11 conceptual exercise: What happens to partial pressure of each gas in a mixture if the volume is decreased by a) lowering T; b) raising P 1) Law of effusion: effusion refers to the exiting of a gas from a chamber. @ same T, same KE.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

chem102-4a - C102-4a-W11 Chem 102- 01 PS 158 page 1 of 5...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online