Quiz for CHM 1046C - Gen Chem with Qual Analysis II with Mellone at Valencia Comm College (VCC)

Quiz Information

Material Type:Quiz 6
Class:CHM 1046C - Gen Chem with Qual Analysis II
Subject:CHM: Chemistry
University:Valencia Community College
Term:Spring 2008
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CHM 1046 Spring, 2008 Quiz 6 Name (print)_________________________ Show your work for complete (and partial) credit. Report your answers to the correct number of significant figures, and use units where appropriate. All chemical equations should balance; indicate phases. 1. For the reaction 2H2(g) + O2(g) → 2H2O(g), the rate law would be: a) rate = k[H2][O2] b) rate = k[H2][O2]2 c) rate = k[H2]2[O2] d) rate = k[H2]2[O2]2 e) not enough information is provided to decide. 2. a) Define catalyst. b) How does a catalyst accomplish its role? c) What is an enzyme? Why are they in Chapter 14? 3. The rate law for the reaction 2A + 3B → A2B3, the rate law is rate = k[A][B]. Propose a mechanism that is consistent with this information. 4. 2HI(g) ↔ H2(g) + I2(g) When 4.00mol of HI was placed in a 5.00L vessel and allowed to reach equilibrium at 458ºC, the vessel contained 0.442mol H2. What is the value of Kc, the equilibrium constant, at 458ºC? 5 points extra credit: What do leop...

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