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Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.

How would the equilibrium shift in the reaction CH4 (g) + 2 H2S (g) <--> CS2 (g) + 4 H2 (g) if the concentration of CH4 was DECREASED?

a)

Left ; toward reactants

b)

Right ; toward products

c)

no change

2.

How would the equilibrium shift in the reaction CH4 (g) + 2 H2S (g) <--> CS2 (g) + 4 H2 (g) if the concentration of H2S was DECREASED?

a)

Left ; toward reactants

b)

Right ; toward products

c)

no change

3.

How would the equilibrium shift in the ENDOTHERMIC reaction CH4 (g) + 2 H2S (g) <--> CS2 (g) + 4 H2 (g) if the temperature was INCREASED?

a)

Left ; toward reactants

b)

Right ; toward products

c)

no change

4.

Which location would generate the most products for an exothermic reaction?

a)

On a table at room temperature

b)

In an oven at a higher temperature

c)

On ice at a lower temperature

5.

How would the equilibrium shift in the reaction CH4 (g) + 2 H2S (g) <--> CS2 (g) + 4 H2 (g) if the concentration of CS2 was INCREASED?

a)

Left ; toward reactants

b)

Right ; toward products

c)

no change

6.

How could volume be changed to favor products in the reaction CH4 (g) + 2 H2S (g) <--> CS2 (g) + 4 H2 (g)

a)

Decrease V

b)

Increase V

c)

impossible

7.

When does Q = K

a)

At equilibrium

b)

When there are more products

c)

When there are more reactants

8.

When is Q < K

a)

At equilibrium

b)

When there are more products

c)

When there are more reactants

9.

When is Q > K

a)

At equilibrium

b)

When there are more products

c)

When there are more reactants

10.

Which reaction would shift toward products if temperature was increased

a)

H2 + Cl2 <--> 2 HCl + 49.7 kJ

b)

2 NH3 + 37.2 kJ <--> N2 + 3 H2

c)

CO + H2O <--> CO2 + H2 + 27.6 kJ

11.

Which reaction would shift toward reactants if volume was decreased

a)

2 H2O (g) + N2 (g) <--> 2 H2 (g) + 2 NO (g)

b)

SiO2 (s) + 4 HF (g) <--> SiF4 (g) + 2 H2O (g)

c)

CO (g) + H2 (g) <--> C (s) + H2O (g)

12.

How would the equilibrium change for the reaction 4 HCl (g) + O2 (g) <--> 2 H2O (g) + 2 Cl2 (g) if volume was INCREASED

a)

Right ; toward products

b)

Left ; toward reactants

c)

no change

13.

How would the equilibrium change for the reaction 4 HCl (g) + O2 (g) <--> 2 H2O (g) + 2 Cl2 (g) if a catalyst was added

a)

Right ; toward products

b)

Left ; toward reactants

c)

no change

14.

How would the equilibrium change for the reaction 2 HgO (s) <--> Hg (l) + O2 (g) if more HgO was ADDED

a)

Right ; toward products

b)

Left ; toward reactants

c)

no change because HgO is a solid

15.

How would the equilibrium change for the reaction 2 HgO (s) <--> Hg (l) + O2 (g) if the pressure INCREASED

a)

Right ; toward products

b)

Left ; toward reactants

c)

no change