Equilibria Flashcards
How many chemical are reversible
loads
What happens to reversible reactions in a closed system
An equilibrium is established
Why are equilibria dynamic
The forward and reverse reactions continue to proceed at the same rate
What happens when a reaction is at equilibria
The concentrations of reactants and products are constant
In a homogeneous equilibrium how do you get an expression for the equilibrium constant
The concentration of the substances can be combined
State Le Chatelier’s principle
the position of the equilibrium of a system changes to minimse the effects of any imposed change in conditions
Increasing the temp effects the equilibrium how?
Shifts the position of the equilibrium in the direction of the endothermic reaction and changes the value of Kc
Decreasing the temp effects the equilibrium how?
Shifts the position of the equilibrium in the direction of the exothermic reaction and changes the value of Kc
Increasing the pressure effects the equilibrium how?
Shifts the position of the equilibrium in the direction with fewer moles of gas, to reduce the pressure
Decreasing the pressure effects the equilibrium how>
Shifts the position of equilibrium in the direction with more moles of gas, to increase the pressure
Increasing the conc of reactants effects the equilibrium how>
Shifts the position of equilibrium to the products side, but does not change the value of Kc
Increasing the conc of products effects the equilibrium how?
Shifts the position of equilibrium to the reactant side, but does not change the value of Kc
How does a catalyst effect the position of equilibrium
Does not affect
and doesn’t affect the Kc value
How does a catalyst affect a reversible reaction
Increases the rate of the forward and reverse direction equally, so that it takes a shorter time to reach equilibrium
In industry, how do they get the highest yield in the fastest time
change in temp, pressure, conc and a catalyst
