a state reached by a reaction mixture when the forward and reverse reaction rates become equal its a type of state, a condition of the symptom no net change between reactants and products; their CONCENTRATIONS are steady and equal

yield a mixture of reactants and products

forward and reverse reactions occur with equal rate, such that there is no net change in composition (at macro level anyway) everything well be working with is dynamic equillibrium

is anything happening when a reaction is at equillibrium?

at a microscopic level, forward and backward reactions are occurring, things continue to change but at macroscopic level theres no net change

what does equilibrium composition depends on

initial concentrations temperature (particularly important) pressure volume (pressure and volume are mainly for gases)

equilibrium constant units

ITS UNITLESSSSS GET PRANKKKEDDDDD

what does equilibrium constant depend on

not initial concentrations but rather temperature

how do you know if a rxn is at equilibrium

the reaction rates are equal/the same for each side (rxn keeps going on but at equal rates so theres no net change) no net change in concentrations (dont necessarily have to be equal)

if the cocnentrations of products and reactants are equal, is the system at equilibrium?

not necessarily to characterize a rxn as at equilibrium, concentrations need to be CONSTANTLY but do not need to be equal

reversible rxns need to be in what kind of container for equilibrium to be met

closed closed system otherwise something will escape and concentrations can be constant if you’re losing some

when is partial pressure used

to express equilibrium constant for gaseous reactions

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chem exam 3

chemical equillibrium

Question	Answer
chemical equilibrium	a state reached by a reaction mixture when the forward and reverse reaction rates become equal its a type of state, a condition of the symptom no net change between reactants and products; their CONCENTRATIONS are steady and equal
with what kinds of reactions can chemical equillibrium occur	reversible reactions
reversible reactions	yield a mixture of reactants and products
dynamic equilibrium	forward and reverse reactions occur with equal rate, such that there is no net change in composition (at macro level anyway) everything well be working with is dynamic equillibrium
is anything happening when a reaction is at equillibrium?	at a microscopic level, forward and backward reactions are occurring, things continue to change but at macroscopic level theres no net change
what does equilibrium composition depends on	initial concentrations temperature (particularly important) pressure volume (pressure and volume are mainly for gases)
equilibrium constant	Kc
does the equilibrium constant depend on initial concentrations	no
equilibrium constant units	ITS UNITLESSSSS GET PRANKKKEDDDDD
what does equilibrium constant depend on	not initial concentrations but rather temperature
how do you know if a rxn is at equilibrium	the reaction rates are equal/the same for each side (rxn keeps going on but at equal rates so theres no net change) no net change in concentrations (dont necessarily have to be equal)
if the cocnentrations of products and reactants are equal, is the system at equilibrium?	not necessarily to characterize a rxn as at equilibrium, concentrations need to be CONSTANTLY but do not need to be equal
reversible rxns need to be in what kind of container for equilibrium to be met	closed closed system otherwise something will escape and concentrations can be constant if you’re losing some
when is partial pressure used	to express equilibrium constant for gaseous reactions

Created by: user-1759191

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