Gas-Phase Chemical Equilibrium: Interactive Simulations
These simulations run in your browser. Try to predict the behavior when a parameter changes before using a slider to change that parameter. For these simulations, screencasts are provided to explain how to use them.
Chemical Equilibrium in the Haber Process
Try to answer these questions before determining the answer with the simulation. We suggest that you write down the reasons for your answers.
- As temperature increases, does the number of moles of NH3 increase or decrease?
- As pressure increases, does the number of moles of NH3 increase or decrease?
- Is it possible at low H2 concentrations to add N2 to the system and observe the reaction shifts to the left (i.e., less NH3 is present at equilibrium)?
Gas-Phase Chemical Equilibrium at Constant P or V
Try to answer these questions before determining the answer with the simulation. We suggest that you write down the reasons for your answers.
- For a reaction in which one mole of reactant makes two moles of product, will equilibrium conversion be higher for a constant-pressure or a constant-volume, isothermal reactor?
- If the reaction A↔2B is at equilibrium in a constant-pressure reactor and the pressure increases by adding more weight to the piston, which direction does the reaction shift to reach equilibrium?
- For a reaction in which two moles of reactant make one mole of product, will adding an inert increase or decrease equilibrium conversion in an isothermal constant-volume reactor? Assume ideal gases.
- For a reaction in which two moles of reactant make one mole of product, will adding an inert increase or decrease equilibrium conversion in an isothermal constant-pressure reactor? Assume ideal gases.