Chapter 13: Equilibrium Flashcards
what is the equilibrium constant formula?
products/reactants with the mols squaring each value
what happens to the equation if Q > K
the reaction will go backwards
what happens to the equation if Q < K
the reaction will go forwards
what happens to the equation if the reactant is increased?
the reaction will go forward
what happens to the equation if the reactant is decreased?
the reaction will go backwards
what happens to the equation if the product is increased?
the reaction will go backwards
what happens to the equation if the product is decreased?
the reaction will go forward
what effect does a solid have on equillibrium?
no effect
does a catalyst have an effect on equillibrium?
no, but it does speed up the rate the system will reach equillibrium
what happens when you increase the temperature in an endothermic reaction?
the system will shift forward
what happens when you decrease the temperature in an endothermic reaction?
the system will shift backwards
what happens when you increase the temperature in an exothermic reaction?
the system will shift backwards
what happens when you decrease the temperature in an exothermic reation?
the system will shift forward
what is the only thing that will effect K?
temperature
what happens when you increase the pressure (decrease the volume) in a system?
the system will shift to the side with less mols of gas
what happens when you decrease the pressure (increase the volume) in a system?
the system will shift to the side with more mols of gas
what does a negative H indicate?
the system is exothermic
what does a positive H indicate?
the system is endothermic
if there is an equal amount of mols on each side of the system, what happens to pressure?
the pressure no longer has an effect on the equation
what happens if K is less than 1?
the system is favoring the reactants side
when is Kc and Kp equal?
in the formula (on the periodic table) Kp = Kc(RT)^n, n needs to be 0 to cancel out RT. that would mean the reactants gas mols would have to equal the products gas mols
when reactants are added, what happens to Q?
Q decreases
when products are added, what happens to Q?
Q increases
