Equilibrium 1

Question 1

state of dynamic equilibrium

Answer 1

• the rate of the forward reaction is equal to the rate of the backward reaction
• the concentrations of reactants and products remain constant

Question 2

effect of a change in temperature on a homogeneous system in equilibrium

Answer 2

• if the temperature is increased

- shifts to the side of the products of endo reaction

Question 3

effect of a change in concentration on a homogeneous system in equilibrium

Answer 3

• if the concentration of reactants is increased
• equi shifts to the right
• so reducing the concentration of the reactants again
• this process increases the concentration of the products

Question 4

effect of a change in pressure on a homogeneous system in equilibrium

Answer 4

• if the pressure of the system is increased
• the system shifts to the side with the least moles -reducing the number of molecules present and so reducing the pressure

Question 5

equilibrium in the industrial process

Answer 5

• create conditions which give the optimum yield
  eg. conditions for a good equilibrium yield from an exothermic reaction require a low temperature however that means low rate so have to compromise

Question 6

calculating Kc, equilibrium constant

Answer 6

[products]/[reactants]
if it is 2A then it is [A}^2
solid substances don’t have a concentration so are not included