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

Quiz Information

Material Type:Quiz 5
Professor:Mellone
Class:CHM 1046C - Gen Chem with Qual Analysis II
Subject:CHM: Chemistry
University:Valencia Community College
Term:Fall 2008
Keywords:
  • Second Order Reaction
  • Concentration
  • Useful Information
  • Partial Credit
  • Correct Number
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Sample Document Text

CHM 1046 Fall, 2008 Quiz 5 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. . Useful? information ln([A]t/[A]0) = -kt 1/[A]t = kt + 1/[A]0 t½=.693/k t½=1/(k[A]0) 1. If a plot of 1/[A]t vs. time is linear, what does this tell you? What does the slope tell you? 2. For a first-order reaction, it takes 57s for the reactant concentration to drop from 1.0M to 0.50M. How long will it take for the reactant concentration to drop from . 50M to .25M? 3. For a first-order reaction, it takes 22.2s for the concentration of reactant A to drop from 1.00 to 0.500M. Starting with [A] = 0.677M, what will the concentration be after 0.550min? 4. What are the units that might be used for the following? a) reaction rate? b) a first order rate constant? c) the k in rate=k[A][B]2 d) a half-life? 5. For a second-order reaction, if it ta...

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