[PDF] [PDF] Le Châteliers Principle Worksheet

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Le Chatelier's Principle Worksheet 1) For the reaction below, which change would cause the equilibrium to shift to the right? CH4(g) + 2H2S(g) ↔ CS2(g) + 

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Le Chatelier's Principle Worksheet 1) For the reaction below, which change would cause the equilibrium to shift to the right? CH4(g) + 2H2S(g) ++ CS2(g) + 

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Le Châtelier's Principle Worksheet 1) What would happen to the position of the equilibrium when the following changes are made to the equilibrium system 

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Le Châ

1) What would happen to the position of the equilibrium when the following

changes are made to the equilibrium system below?

CH4(g) + 2H2S(g) ļCS2(g) + 4H2(g)

(a) Decrease the concentration of dihydrogen sulfide (hydrosulfuric acid).

Equilibrium will shift to favor reactants.

(b) Increase the pressure on the system.

Equilibrium will shift to favor reactants.

(c) Increase the temperature of the system. Not possible to answer as we do not know if the reaction is exo- or endothermic. (d) Increase the concentration of carbon disulfide.

Equilibrium will shift to favor reactants.

(e) Decrease the concentration of methane.

Equilibrium will shift to favor reactants.

2) What would happen to the position of the equilibrium when the following

changes are made to the equilibrium system below?

2SO3(g) ļ2SO2(g) + O2(g)

(a) Sulfur dioxide is added to the system.

Equilibrium will shift to favor reactants.

(b) Sulfur trioxide is removed from the system.

Equilibrium will shift to favor reactants.

(c) Oxygen is added to the system.

Equilibrium will shift to favor reactants.

3) What would happen to the position of the equilibrium when the following

changes are made to the reaction below?

2HgO(s) ļ Hg(l) + O2(g)

(a) HgO is added to the system.

Equilibrium will shift to favor products.

(b) The pressure on the system increases.

Equilibrium will shift to favor reactants.

4) When the volume of the following mixture of gases is increased, what will be

the effect on the equilibrium position?

4HCl(g) + O2(g) ļ 2H2O(g) + 2Cl2(g)

Equilibrium will shift to favor reactants.

5) Predict the effect of decreasing the volume of the container for each

equilibrium. (a) 2H2O(g) + N2(g) ļ 2H2(g) + 2NO(g)

Equilibrium will shift to favor reactants.

(b) SiO2(s) + 4HF(g) ļ SiF4(g) + 2H2O(g)

Equilibrium will shift to favor products.

(c) CO(g) + H2(g) ļC(s) + H2O(g)

Equilibrium will shift to favor products.

6) Predict the effect of decreasing the temperature on the position of the

following equilibria. (a) H2(g) + Cl2(g) ļ 2HCl(g) + 49.7 kJ

Equilibrium will shift to favor products.

(b)

2NH3(g) ļN2(g) + 3H2(g)

Equilibrium will shift to favor reactants.

(c) CO(g) + H2O(g) ļ CO2(g) + H2(g)

Equilibrium will shift to favor products.

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