SC15b Factors Affecting Equilibrium

Question 1

what happens in a dynamic equilibrium? 2

Answer 1

~forward and backward reactions happen at the same rate
~concentrations of all reacting substances do not change

Question 2

what type of reactions may reach dynamic equilibrium?

Answer 2

reversible reaction

Question 3

effects of temperature increase on dynamic equilibrium?

Answer 3

~moves in the direction of the endothermic reaction
~time taken to reach equilibrium decreases

Question 4

effects of pressure increase in a gas reaction on dynamic equilibrium?

Answer 4

~moves towards the side of the balanced equation with fewer molecules of reacting gas
~time taken to reach equilibrium decreases

Question 5

effects of concentration increase of reactant on dynamic equilibrium?

Answer 5

~moves away from the reacting substance in the balanced equation
~time taken to reach equilibrium decreases

Question 6

effects of catalyst added on dynamic equilibrium?

Answer 6

~position of equilibrium doesn’t change
~time taken to reach equilibrium decreases

Question 7

how is reaction pathway chosen?

Answer 7

thinking about:
~availability and cost of raw materials and energy supplies​
~the rate of reaction and the equilibrium position​
~atom economy, yield and usefulness of by-products​