1.) Consider the following equilibrium:
BaSO4 (s) <-> Ba+2 (aq) + SO4 -2 (aq); Delta H >0.

In which direction will the equilibrium shift if
a) H2SO4 is added? Why?
b) BaCl2 is added? Why?
c) NaCl is added? Why?
d) Heat is added? Why?

2.) Consider the following equilibrium:
HNO2 (aq) + H2O (l) <-> H3O+ (aq) + NO2- (aq)

In which direction will the equilibrium shift if
a) NaOH is added?
b) NaNO2 is added?
c) HCl is added?
d) The acid solution is made more dilute?

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