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Heterogeneous Chemical Equilibrium: Interactive Simulation

This simulation runs on your browser. Try to predict the behavior when a parameter changes before using a slider to change that parameter. A screencast explains how to use this simulation.

Heterogeneous Chemical Equilibrium

Try to answer these questions before determining the answer with the simulation. We suggest that you write down the reasons for your answers.

  1. For the conditions represented by the bar graph in the figure (0.5 mol CaCO3, 1.6 mol CaO, and 1.5 mol CO2),
    1. what happens when 0.5 mol CaO is added to the system at constant temperature? Does the pressure increase or decrease?
    2. what happens when 0.5 mol CaCO3 is added at constant temperature? Does the pressure increase or decrease?
    3. what happens when 0.5 mol CO2 is added at constant temperature? Does the pressure increase or decrease?
    4. what happens when 2 mol CO2 is added at constant temperature? Does the pressure increase or decrease?
  2. The reaction is endothermic. What happens to the pressure when the temperature increases?
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