Equlibrium Calculations Problem Set

This problem set was developed by S.E. Van Bramer for Chemistry 146 at Widener University.

The equlibrium for the following chemical reaction is very temperature dependent.
2 NO2 <--> N2O4

  1. Write the equlibrium expression for this reaction.

  2. Calculate the equlibrium constant given the equlibrium conditions at 320 K where:
    1. PNO2 = 0.10 atm
    2. PN2O4 = 0.018 atm

  3. Given the following initial conditions, predict the direction of the reaction.
    NO2
    (atm)    		 N2O4
    (atm)
    0.100.10
    0.0100.010
    1.02.0
    2.07.0
    0.011.8*10-4
    0.50.5

  4. Given the initial, non-equlibrium, conditions. Calculate the equlibrium pressure of NO2 and N2O4.
    1. PNO2 = 0.20 atm; PN2O4 = 0.00 atm
    2. PNO2 = 0.00 atm; PN2O4 = 0.20 atm
    3. PNO2 = 0.20 atm; PN2O4 = 0.20 atm

Please send comments or suggestions to svanbram@science.widener.edu

Scott Van Bramer
Department of Chemistry
Widener University
Chester, PA 19013

© copyright 1996, S.E. Van Bramer
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Last Updated: MTuesday, February 16, 1999 8:27:56 AM