Equilibrium and Le Chatelier's Principle

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

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

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

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-7

For the reaction...
N₂  +  O₂  <=>  2NO
If  O₂ is removed, the  concentration of N₂ will _______.

• increase
• decrease
• remain the same
• double

Tags

NGSS.HS-PS1-5

An equilibrium constant with a large value, e.g. K_c = 1000, indicates…

• A very fast reaction
• Mostly products at equilibrium
• Mostly reactants at equilibrium
• It takes a long time to reach equilibrium

Around what time does the reaction reach equilibrium?

• 25 min

• 70 min

• 45 min

• 80 min

Tags

NGSS.HS-PS1-5

What are the two factors that help determine that equilibrium is reached?

• Forward reaction rate is faster than the reverse and the concentrations are equal

• Forward and reverse reaction rates are equal and concentrations are equal

• Forward and reverse reaction rates are equal and concentrations are constant

Tags

NGSS.HS-PS1-6

Which of the two graphs reaches equilibrium?

• Neither

• The left

• Both

• The right

2SO₂(g)+O₂(g)⇌2SO₃(g)
Increasing volume of container will

• shift equilibrium right
• shift equilibrium left
• slow rate of reaction
• have no change

N_{2 (g)} + 3H_{2 (g)} < -> 2NH_{3 (g)} + Heat

Removing H₂ will cause

• Shift Left

• Shift Right

2SO₂(g)+O₂(g) ⇌ 2SO₃(g) + Heat

Increasing the temperature will...

• shift equilibrium left

• shift equilibrium right

Tags

NGSS.HS-PS1-5