Mastering Chemical Equilibrium

• Open systems allow neither matter nor energy exchange, while closed systems allow energy exchange
• Open systems allow both matter and energy exchange, while closed systems allow only energy exchange
• Open systems allow matter and energy exchange with the surroundings, while closed systems only allow energy exchange (correct)
• Open systems only allow energy exchange, while closed systems allow both matter and energy exchange

• The temperature and pressure of the system
• The addition of a catalyst
• The activation energy of the forward and reverse reactions
• The relative concentrations of products and reactants (correct)

• Describing the relationship between product and reactant concentrations at equilibrium
• Predicting the effect of changes on the position of equilibrium and the equilibrium constant (correct)
• Determining the equilibrium constant for a chemical system
• Calculating the activation energy of a chemical reaction