Post on 17-Dec-2015
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