Section 17.2 Quiz

Which of the following is not a stress for a chemical reaction

• substance concentration

• pressure

• temperature

• substance appearance

When an equilibrium is stressed, it will proceed in the direction that will relieve the stress, according to _____

• Le Chatelier's principle

• The K_eq

• The K_sp

• Common-ion effect

What will be the result if the following exothermic reaction is subjected to the stress of removing some H₂O (g)

CO (g) + H₂ (g) <--> C(g) + H₂O (g)

• The reaction will be reactant-favored (go left)

• The reaction will be product favored (go right)

• There will be no effect

• It is impossible to tell the effect

Given the exothermic reaction CO(g) + H₂ (g) <--> C(g) + H₂O (g), what will be the effect if the pressure at equilibrium is decreased

• The reaction will shift toward the product side (go right)

• The reaction will shift toward the reactant side (go left)

• There will be no shift in either direction

• It is impossible to tell the effect

For the reaction...
SO₂ + O₂  <=>  SO₃
If the concentration of SO₂ is increased, the equilibrium position of the reaction will shift ___________.

• to the left
• to the right
• to the left and right 
• neither left nor right

If there is an increase in reactant concentration, it will

• shift forward/toward right

• reverse/toward left

• neither

What stress will affect the value of K_eq

• Substance concentration

• Temperature

• Pressure

For the reaction...
SO₂ + O₂ <=>  SO₃
If the equilibrium position shifts to the right, the concentration of O₂ will ___________.

• increase
• decrease
• remain the same
• double

What is LeChatelier's Principle?

• Stresses do not shift a reaction
• Equilibrium does not exist
• A stress only shifts a reaction to the right
• A reaction at equilibrium will shift to relieve a stress

In the context of Le Chatelier's Principle, what is the effect of adding more product to a reaction at equilibrium?

• The equilibrium shifts to favor the reactants

• The equilibrium shifts to favor more product formation

• The equilibrium position does not change

• The equilibrium constant decreases