Reversible reactions and equilibrium

Question 1

Reversible reactions occur when

Answer 1

products of the reaction can react to produce the original reactants

Question 2

If the forwards reaction is endothermic the backwards reaction is

Answer 2

exothermic

Question 3

In a reversible reaction the same quantity of energy is

Answer 3

transferred in both direction

Question 4

When does equilibrium occur

Answer 4

when the forwards and backward reactions occur at the same rate

Question 5

What happens when during equilibrium reaction the production concentration increases

Answer 5

the backwards reaction happens and product breaks down into reactants, rate of forwards and backwards reactions are the same

Question 6

What happens at the start of an equilibrium reaction

Answer 6

concentration of reactants is high therefore the forwards reaction is fast

Question 7

Dynamic equilibrium definition

Answer 7

constantly changing at t he same forwards and backwards rate

Question 8

Closed system definition

Answer 8

a reaction which prevents any reactants or products escaping