Question

1)

Consider the reaction: ??(?) + ??(?) ↔ ???(?). Suppose a sample of air contains initially [N2]=0.80M
and [O2]=0.20M. Calculate the equilibrium concentration of all reactants and products at equilibrium.
a. if Kc= 1.0x10-5
b. if Kc=1.20

2)

Consider the following reaction: ??(?) + ?2?(?) ↔ ??2(?) + ?2(?) ?? = 107 (?? 500?)
If a reaction mixture initially contains 0.125M CO and 0.125M H2O, what will be the equilibrium
concentration of each of the reactants and products?

3)

The reaction ????(?) ↔ ????(?) + ???(?) has a Kc=0.573 at 500 K. If the initial concentrations in a
particular mixture of reactants and products are [PCl5]=0.500 M, [PCl3]=0.150 M and [Cl2]=0.600 M.
a. In which direction will the reaction proceed to reach equilibrium? (Show all your work)
b. Draw an ICE table

c. What are the concentrations of all products and reactant when the mixture reaches equilibrium?
Show all your work (Include them in your ICE table)

Answer 1