3.1.6.2 Equilibrium constant Kc for homogenous systems Flashcards
What is K?
The equilibrium constant; it expresses the relationship between products and reactants of a reaction at equilibrium with respect to a specific unit in a homogenous reaction
What is a homogenous reaction?
All reactants and products are in the same state
What is Kc?
The equilibrium constant of concentration of a chemical reaction. Defined as the ration of the concentration of the products to the concentration of the reactants, each raised to their respective stoichiometric coefficients
How can a constant temperature be maintained in an experiment?
Use water bath/ thermostat
What change in conditions affects the value of Kc?
Temperature affects Kc
Catalyst, pressure or concentration has no effect on Kc
How does Kc change as temperature of the reaction in equilibrium is changed?
Fwd reaction: exo, temp increased
so Equilibrium shifts left and Kc decreases as less product formed.
Why don’t catalysts change the value for Kc?
Catalysts have no effect on Kc or position of equilibrium as they can’t increase the yield of product formed.
