Le Chatelier's Principle

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

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

2SO₂(g)+O₂(g)⇌2SO₃(g) is an exothermic reaction.
an in Increase temperature will...

• shift equilibrium toward the right
• shift equilibrium toward the left
• increase pressure
• have no change

Tags

NGSS.HS-PS1-5

The three factors that affect the equilibrium of a reaction are temperature, pressure and __________. 

• energy
• concentration 
• enthalpy 
• ice 

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

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

• left
• right
• left and right 
• neither left nor right

Tags

NGSS.HS-PS1-5

At what time does the reaction reach equilibrium?

• t₁
• t₂
• t₃
• t₄

Tags

NGSS.HS-PS1-5

During equilibrium, the rates of the forward and the reverse reaction are ________

• the same 
• unequal
• unequal for exothermic reactions
• unequal for endothermic reactions

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

The idea that when a system at equilibrium is stressed, it will react to relieve that stress and return to equilibrium is known as:

• Boyle's Law
• Le Chatelier's Principle
• Charles Law
• Denninger's Law

Tags

NGSS.HS-PS1-6

Le Chaltelier's Principle states that if a chemical system at equilibrium is stressed,

• the system will adjust to increase the stress
• the system will adjust to reduce the stress
• the system will not adjust

When you increase the pressure on an equilibrium system the system will shift to the side with ______.

• least amount of heat

• least moles of gas

• least moles

When writing an endothermic reaction, heat energy is stated as

• product
• catalyst
• reactant

Tags

NGSS.HS-PS1-4