Equilibrium Flashcards
what is a reversible reaction
a reaction in which the products can react to reform the original reactants
what is dynamic equilibrium
when the forward and back reactions are both occurring at the same rate
*requires a closed system
what is Le Chatelier’s principle
if one or more factors that affect an equilibrium is changed, the position of the equilibrium shifts in the direction that reduces the change
what is the equilibrium constant
equilibrium values expressed as concentrations in moldm^-3
in a reaction aA + bB ⇌ cC + dD,
Kc = [C]^c [D]^d ÷ [A]^a [B]^b
what does the size of Kc tell you
- LARGE value = PRODUCTS favoured
* SMALL value = REACTANTS favoured
what is the only thing that can change the value of Kc?
temperature
what is Kp
the equilibrium values expressed as partial pressures in Pa
NO SQUARE BRACKETS, write as p( )
what is a Brønsted-Lowry acid and base?
- acid = proton donor
* base = proton acceptor
