This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: Wright, Jacqueline Homework 4 Due: Oct 3 2007, 11:00 pm Inst: James Holcombe 1 This printout should have 26 questions. Multiplechoice questions may continue on the next column or page find all choices before answering. The due time is Central time. 001 (part 1 of 1) 10 points K c = 9 . 7 at 900 K for the reaction NH 3 (g) + H 2 S(g) NH 4 HS(s) . If the initial concentrations of NH 3 (g) and H 2 S(g) are 2.0 M, what is the equilibrium concentration of NH 3 (g)? 1. 0.10 M 2. 0.20 M 3. 1.9 M 4. 1.7 M 5. 0.32 M 002 (part 1 of 1) 10 points For the reaction POCl 3 (g) * ) POCl(g) + Cl 2 (g) K c = 0 . 30. An initial 0 . 3 moles of POCl 3 are placed in a 3 . 7 L container with initial concentrations of POCl and Cl 2 equal to zero. What is the final concentration of POCl 3 ? ( Note: You must solve a quadratic equation.) 1. final concentration = 0 . 0146918 M 2. final concentration = 0 . 185 M 3. final concentration = 0 . 066 M 4. final concentration = 0 . 0293836 M 5. final concentration = 0 . 266081 M 003 (part 1 of 1) 10 points The equilibrium constant for thermal dissoci ation of F 2 into atoms is 0.300. If 1 . 77 moles of F 2 are placed in a 1.00 liter container, how many moles of F 2 have dissociated at equilib rium? Answer in units of mol. 004 (part 1 of 1) 10 points Consider the equilibrium A(g) * ) 2B(g) + 3C(g) at 25 C. When A is loaded into a cylinder at 10 atm and the system is allowed to come to equilibrium, the final pressure is found to be 16 . 69 atm. What is G r for this reaction? Answer in units of kJ / mol. 005 (part 1 of 1) 10 points When 0 . 0172 mol HI is heated to 500 K in a 2 L sealed container, the resulting equilibrium mixture contains 1 . 9 g of HI. Calculate K c for the decomposition reaction 2HI(g) * ) H 2 (g) + I 2 (g) . 006 (part 1 of 1) 10 points Suppose the reaction H 2 (g) + I 2 (g) * ) 2HI(g) has an equilibrium constant K c = 49 and the initial concentration of H 2 and I 2 is 0.60 M and HI is 0.0 M. Which of the following is the correct value for the final concentration of HI(g)?...
View
Full
Document
This note was uploaded on 12/08/2008 for the course CH 302 taught by Professor Holcombe during the Spring '07 term at University of Texas at Austin.
 Spring '07
 Holcombe
 Chemistry

Click to edit the document details