6.3 NATURE OF REACTIONS Supplemental Practice Problems,

PROBLEM

1. For the following gaseous equilibrium reactions, indicate what happens to the equilibrium position (shift to right or left) when the indicated disturbance or condition change occurs.

N₂ + 3H₂ ó 2NH₃ + energy

a. remove NH₃ gas b. decrease pressure

CO₂ + H₂ + energy ó CO + H₂O

c. decrease temperature d. add a catalyst

2SO₂ + O₂ ó 2SO₃ + energy

e. increase SO₂ concentration f. increase temperature

CO₂ + C + energy ó 2CO

g. increase temperature h. increase CO concentration

N₂O₄ + energy ó 2NO₂

i. increase pressure j. remove N₂O₄

H₂ + Cl₂ ó 2HCl + energy

k. increase H₂ concentration l. increase pressure

N₂ + O₂ + energy ó 2NO

m. decrease O₂ concentration n. add catalyst

SECTION REVIEW

1. Ammonia can be converted to the high nitrogen content fertilizer urea, NH₂CONH₂, according to the following equation.

CO₂(aq) + 2NH₃(aq) ó NH₂CONH₂(aq) + H₂O(l) + energy

Indicate whether the equilibrium shifts left or right when the indicated disturbance or condition change occurs.

a. remove urea, NH₂CONH₂

b. increase CO₂ concentration

c. increase temperature

d. add catalyst