AP Chem Equilibrium Unit

K

reactants favored

K>1

products favored

what happens when Kp/Kc value is very large

no reactants are left, rxn. goes to completion

what happens when Kp/Kc value is very small

reaction barely proceeds

pressure increases

shifts rxn. to the side with less moles

volume decreases

pressure increases, shifts rxn. to the side with less moles

change in temperature (exo)

heat acts as product, shifts rxn. left

change in temperature (endo)

heat acts as reactant, shifts rxn. right

addition of a liquid/solid

no change

addition of an inert gas

no change

exothermic rxn. increases temperature

K value decreases

exothermic rxn. decreases temperature

K value increases

rate of rxn. when equilibrium is close

slows down

rate of rxn. when equilibrium is achieved

forward and reverse rate constant

rate of rxn. when a disturbance happens

speeds up until new equilibrium is reached

rate of rxn. when a catalyst is introduced

equilibrium is reached faster

difference between K and Q

K is a point at equilibrium, Q is any point during a rxn.

Q>K

reaction proceeds to the left, precipitate will form

Q

reaction proceeds to the right, precipitate will not form