Dynamic equilibrium

Question 1

what is meant by a reversible reaction?

Answer 1

​the​ ​products​ ​of​ ​the​ ​reaction​ ​can​ ​react​ ​to​ ​produce the​ ​original​ ​reactants ( forward and backward reaction occur at the same time)

Question 2

what is the symbol used for a reversible reaction

Answer 2

two half arrows ( ​⇌​)

Question 3

what is an example of a reversible reaction?

Answer 3

The Haber process
hydrogen​ ​+​ ​nitrogen​ ​⇌​ ​ammonia

Question 4

If​ ​the forward ​is​ ​endothermic​ ​ what type of reaction would the backward be in a reversible reaction?

Answer 4

exothermic

Question 5

is there a difference in the energy transferred for the forward and backward reaction

Answer 5

No. the same​ ​amount​ ​of​ ​energy​ ​is​ ​transferred​ ​each​ ​way

Question 6

what is meant by dynamic equilibrium

Answer 6

when the forward and backward reaction occur at the same rate.

Question 7

what conditions should be met in order for a system to reach dynamic equilibrium?

Answer 7

The reaction takes place within a closed system
The concentration of the the reactants and products do not change ( constant)

Question 8

What is meant by Le Chatelier’s Principle?

Answer 8

If​ ​a​ ​system​ ​is​ ​at​ ​equilibrium​ ​and​ ​a​ ​change​ ​is​ ​made​ ​to​ ​any​ ​of​ ​the​ ​conditions,
then​ ​the​ ​system​ ​responds​ ​to​ ​counteract​ ​the​ ​change

Question 9

what is the effect of increasing concentration of the reactants?

Answer 9

If​ ​​concentration​ ​of​ ​reactants​ ​is​ ​increased​:​ ​position​ ​of​ ​equilibrium​ ​shifts
towards​ ​products​ ​so​​ ​more​ ​product​ ​is​ ​produced​​ ​until​ ​equilibrium​ ​is​ ​reached
again

Question 10

What is the effect of increasing concentration of the products?

Answer 10

if​ ​​concentration​ ​of​ ​products​ ​is​ ​increased​:​ ​position​ ​of​ ​equilibrium​ ​shifts​ ​towards
reactants​ ​so​ ​​more​ ​reactant​ ​is​ ​produced​​ ​until​ ​equilibrium​ ​is​ ​reached​ ​again

Question 11

what happens to the position of equilibrium if the temperature is increased?

Answer 11

If​ ​​temperature​ ​is​ ​increased​:​ ​equilibrium​ ​moves​ ​in​ ​the​ ​​direction​ of ​the
endothermic​ ​reaction​​ ​

Question 12

what happens to the position of equilibrium If the temperature is decreased?

Answer 12

If​ ​​temperature​ ​is​ ​decreased​:​ ​equilibrium​ ​moves​ ​in​ ​the​ ​​direction​ ​of​ ​the
exothermic​ ​reaction​​ ​