Enthalpy, rates and equilibria content

Question 1

effect of changing concentration

Answer 1

-increasing the concentration
-shifts the position of equilibrium to in the opposite direction
-the equilibrium concentrations of that side increase
-counteracts the change in concentration

Question 2

effect of changing pressure

Answer 2

-increasing the pressure of a reaction
-shifts the position of equilibrium towards the side
-with less gaseous moles, increasing the equilibrium concentration
-to minimise the change in pressure

Question 3

effect of changing temperature

Answer 3

-increasing the temperature
-shifts equilibrium towards the endothermic direction
-increasing the equilibrium concentration of that side
-minimising the change in temperature

Question 4

effect of a catalyst

Answer 4

-catalysts have no effect on the position of equilibrium
-it increase the rate of the forward and reverse reaction equally
-so only increases the rate at which equilibrium is established

Question 5

features of an equilibrium

Answer 5

-reaction is taking place in a closed system
-rate of the forward reaction is equal to the rate of the reverse reaction
-the concentrations of reactants and products remain constant and do not change