1. Consider the following equilibrium: AgCl(s) Ag+ (aq) + Cl- (aq) ?Ho > 0 In wh

ID: 805793 • Letter: 1

Question

1. Consider the following equilibrium:

AgCl(s) Ag+ (aq) + Cl- (aq) ?Ho > 0

In which direction will the equilibrium shift if a. HCl is added? Why?

b. AgNO3 is added? Why?

c. Na2SO4 is added? Why?

d. Heat is added? Why?

2. Consider the following equilibrium:

CO2(g) + Ca(OH)2(s) <---------> CaCO3(s) + H2O(l) ?Ho = -113 kJ/mol

In which direction will the equilibrium shift if a.

Decrease temperature at constant pressure (no phase change)? Why?

b. Increase volume at constant temperature? Why?

c. Increase partial pressure of CO2? Why?

d. Remove one-half of the initial CaCO3? Why?

1 a to the left as the concentration of Cl ions will increase in solution.

b. To the right as the concentration of Ag ions will increase in solution.

c no change

d If heat is added rates of both reactions will increase

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