Topic 7 -EquilibriumA little review

Warm-up

1. Discuss the characteristics of a reaction in dynamic equilibrium.

-How do the rates of the forward and reverse reactions compare?-How do the concentrations of reactants and products compare?

2. How is the equilibrium constant expression determined?

3. Explain the effect of a change in temperature on Kc.

4. Explain how adding a catalyst affects Kc.

Macroscopic/Atomic Properties?

Break to Richard Thornley….

7.2.1

Deduce the equilibrium constant expression from the equation for a homogenous reaction.

7.2.2

Deduce the extent of a reaction from the magnitude of the equilibrium constant.◦Kc = ~ 1◦Kc >>1◦Kc <<1

7.2.3

For the following equation:PCl5 (s) PCl3(l) + Cl2(g) ΔH = +88kJ/mol

Explain the effect of each of the following changes on kc:1. Increase in chlorine concentration2. Increase in pressure3. Increase in temperature4. Addition of a catalyst

7.2.4

State and explain the effect of a catalyst on an equilibrium reaction.

7.2.5

Apply the concepts of kinetics and equilibrium to industrial processes.

You must know the Haber and Contact Processes very well! ◦Include conditions and uses of products