For Monday Continue working on Lon-Capa. Assignment #2 due Monday, 9/12 by 5 pm Assignment #3 due Monday, 9/19 by 5 pm Finish reading Chapter 5 and doing the Chapter 5 homework. Watch Chapter 5 videos if you haven’t already done so. See me or email me if there are any questions or concerns.

Chapter 5: Challenge Problem

Gas Law Problem You heat 5.00-g of KClO3. Determine the volume of oxygen gas collected at 1.00 atm and 25°C. KClO3 (s)  KCl (s) + O2 (g) [1.50 L]

Clicker Question Suppose we ignite an equimolar (equal moles) mixture of hydrogen and oxygen gases to produce water vapor in a rigid closed container at constant temperature. Determine the final pressure (Pf) in the container in terms of the initial pressure (Pi).  a) Pf = 2Pi b) Pf = (1/2)Pi c) Pf = (2/3)Pi d) Pf = (3/4)Pi e) I do not know how to do this.

Kinetic Molecular Theory Gases consist of particles in constant random motion. Temperature is a measure of average kinetic energy. Pressure is due to collisions of gas particles with the container.

The Partial Pressure of each Gas in a Mixture of Gases in a Container Depends on the Number of Moles of that Gas

KMT (assumptions) Assume gas particles exert no forces on each other. Assume the volume of the individual gas particles is negligible (zero). Identity of the gas doesn’t matter!

PV/nRT vs. P