Equilibria Flashcards
For maxwell boltzmann distribution graphs, use paper flashcards
What is dynamic equilibrium?
The rate of the forward reaction is equal to the rate of the backward reaction (hence conc. of reactants and products do not change)
What condition is essential for equilibrium?
Closed system - reactants and products cannot escape
What is Le Chatelier’s principle?
If you change the conditions of a reversible reaction at equilibrium, the system will try to counteract that change
If the forwards reaction is endothermic, what effect would increasing the temperature have on the position of equilibrium?
Position of equilibrium shifts to the right, resulting in greater yield of product
What effect does increasing pressure have on the position of equilibrium?
Position of equilibrium will shift to the side with less moles
What effect does a catalyst have on the position of equilibrium?
No effect
What is activation energy (Ea)?
Minimum energy which particles need to collide to start a reaction
What is the collision theory?
For a successful collision, particles must have energy greater than or equal to Ea and the particle orientation must be correct
What condition affects the value of Kc?
Temperature
What type of system is Kc relevant for?
Homogenous systems in equilibrium
What does a Kc value being greater or less than one suggest about the position of equilibrium?
Greater than 1 = equilibrium to the right
Less than 1 = equilibrium to the left
What effect does decreasing the temperature in an endothermic reaction have on Kc?
Kc decreases
What effect does increasing the temperature in an endothermic reaction have on Kc?
Kc increases
What effect does decreasing the temperature in an exothermic reaction have on Kc?
Kc increases
What effect does increasing the temperature in an exothermic reaction have on Kc?
Kc decreases
