chemistry module 3 dynamic equilibrium

what is a reversible reaction

the products can react to reform the original reactants

what happens in dynamic equilibrium

the reactants and products are constantly moving, and the rate of the forwards reaction is the same as the backwards reaction in a closed system

what is a closed system

none of the reactants or products escape from reaction mixture

what is the position of equilibrium

relative amounts of products and reactants in an equilibrium mixture

what happens when the poe shifts left

the reactant concentration increases

what is le chatiliers principle

if a change is made to a system in dynamic equilibirum, the position of equilibrium moves to counteract it

where will the poe go if the concentration increases

shifts to the right

where will the poe go if the conc decreases

to the left

what happens to the poe if the pressure increases

shifts to side with less molecules

what happens to the poe if the pressure decreases

shifts to the side with more molecules

how to catalysts affect the position of equilibrium

they increase the forwards and backwards reaction equally so it has no effect on the poe

what is the haber process

the synthesis of ammonia

what is Kc

the equilibrium constant

what is the equation for Kc

aA + bB = cC + dD

k = [C]^c x [D]^d / [A]^a x [B]^b

what do square brackets show

concentration of

where does the position of equilibrium lie if the kc>1

right side

where does the position of equilibrium lie if the kc<1

left side