PEER ASSISTED STUDY SESSIONS Facil: Madi Wright Course: CHEM 1001 A,T & N Week: 3 Email: [email protected] Office: ML 408 Office Hour: Tuesdays 12:00-­‐1:00pm Lectures: Gases 4-­‐5 Textbook: Chapter 2 Topics: • Effusion • Diffusion • Non-­‐ideal gases • Liquefaction of gases • Van der Waals Equation • Atmospheric Problems (ozone layer smog, acid rain) Opener (5 minutes) Short Answer: (20 minutes) 1. What are the ideal conditions for more frequent collisions between gas molecules? 2. What is the difference between effusion and diffusion? 3. What does the ideal gas law assume, that realistically isn’t always true? 4. What do the constants in van der Waal’s equation represent? (Hint: a and b) DISCLAIMER: PASS worksheets are designed as a study aid for use in PASS workshops only. Worksheets may contain errors, intentional or otherwise. It is up to the students to verify the information contained within. PEER ASSISTED STUDY SESSIONS Facil: Madi Wright Course: CHEM 1001 A,T & N Week: 3 Email: [email protected] Office: ML 408 Office Hour: Tuesdays 12:00-­‐1:00pm 5. Why do gases absorb IR? 6. At what regions of light is ozone absorbed? Atmospheric Chemistry – Problems • Important cycles you need to have memorized • Cycles relay in teams • First team to correctly finish the cycles wins a prize! 1. Chapman Cycle 2. Catalytic Cycle 3. “Smog Cycle” (25 minutes) DISCLAIMER: PASS worksheets are designed as a study aid for use in PASS workshops only. Worksheets may contain errors, intentional or otherwise. It is up to the students to verify the information contained within. PEER ASSISTED STUDY SESSIONS Facil: Madi Wright Course: CHEM 1001 A,T & N Week: 3 Email: [email protected] Office: ML 408 Office Hour: Tuesdays 12:00-­‐1:00pm 4. Acid Rain Cycle Long Answer: (35 minutes) 1. A specific amount of Neon gas effuses through a porous membrane in 58.79 seconds. The same amount of a different gas effuses through the same porous membrane in 24.55 seconds. What is the molecular weight of the second gas? 2. Consider the following reaction: NH3(g) + HCl(g) ! NH4Cl(s). What is the ratio of diffusion rates? 3. 52.6g of O2 gas are occupying a 17.0 L closed system container. If the temperature in the container is 160°C, calculate the pressure in bar, using Van der Waals equation. For O2(g), a = 1.36 bar L2/mol2, and b = 0.0318 L/mol. Closer: Feedback Snowball (5 minutes) DISCLAIMER: PASS worksheets are designed as a study aid for use in PASS workshops only. Worksheets may contain errors, intentional or otherwise. It is up to the students to verify the information contained within.