Chemical Equilibrium Flashcards
closed system
open system
reversible reaction
dynamic chemical equilibrium
List the external factors which change the equilibrium position of a
particular reaction viz: temperature, pressure and concentration
Le Châtelier’s principle:
Use Le Châtelier’s principle to predict and explain the effects of
changes of pressure, temperature, and concentration (including
the common ion effect) on the concentrations and/or amounts of
each substance in an equilibrium mixture
Understand and explain, in terms of the rates of the forward and
reverse reactions, the effect of changes of pressure, temperature,
and concentration on the concentrations and/or amounts of each
substance in an equilibrium mixture
State that the addition of a catalyst to a system in equilibrium will
speed up both the forward and reverse reactions equally and
hence have no effect on the position of equilibrium
Interpret the following graphs for chemical reactions in a closed
system:
- Amount (number of moles) vs time
- Concentration vs time
- Rate vs time
When given chemical equations, diagrams or flow charts, apply
rate and equilibrium principles to describe how yields are affected
in various industrial processes
Explain that in industrial processes the conditions chosen are
those that are the most economically viable and that yield may be
sacrificed for rate
Write down an expression for the equilibrium constant having been
given the equation for the reaction
State that temperature is the only factor which influences the value
of the equilibrium constant Kc
Use Le Châtelier’s principle to predict and explain how
temperature influences the Kc value for a particular equilibrium
reaction
