(BLUE) Equilibria 1 - Kc

Question 1

What colour is NO2

Answer 1

Brown

Question 2

What colour is N2O4

Answer 2

Colourless

Question 3

Does the equilibrium position have to lie in the middle of a reaction

Answer 3

NO

Question 4

Define dynamic equilibrium

Answer 4

When in a closed system the forwards reaction = the reverse reaction there is no overall net change

Question 5

What effects the Kc
And what effect does a catalyst have on the Kc

Answer 5

Temperature
Concentration of compounds
Pressure
Catalyst has no effect on the Kc however will increase the rate of reaction

Question 6

Define le chateliers principle

Answer 6

If a system is in a state of dynamic equilibrium then a change in temperature , total pressure or concentration of a reactant or product will cause the equilibrium position to shift/change in order to counteract/cancel out the imposed change.

Question 7

What is the equation for Kc

Answer 7

Kc = conc of products (all timesed together) / conc of reactants (all timesed together)