Equillibrium

Question 1

Closed system

Answer 1

One in which mass is conserved inside the system but energy can enter or leave the system freely.

Question 2

Open system

Answer 2

One in which both energy and matter can be exchanged between the system and its
surroundings.

Question 3

Equilibrium constant

Answer 3

An expression of the concentration of the products (gasses and solutions
only) over the concentration of the reactants (gasses and solutions only) for a reaction that is in
equilibrium.

Question 4

Dynamic equilibrium

Answer 4

Reversible reaction in which the forward and the reverse reactions are taking
place at the same rate, and hence the concentrations of reactants and products are constant.

Question 5

Le chatelliers principle

Answer 5

When an external stress (change in pressure, temperature or concentration)
is applied to a system in dynamic chemical equilibrium, the equilibrium point will change in such a
way as to counteract the stress.

Question 6

Yield

Answer 6

A measure of the extent of a reaction, generally measured by comparing the amount of
product against the amount of product that is possible