Le Chatelier Principle

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

• left

• right

• left and right

• neither left nor right

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

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

• increase

• decrease

• remain the same

• double

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-7

In change in pressure and volume, if the pressure decreases the system will shift to the?

• location of more moles

• shift to the left

• no shift

For the reaction...
SO₂ + O₂ <−>  SO₃
If the equilibrium shifts to the the concentration of SO₃ will ___________.

• increase

• decrease

• stay the same

• triple

Tags

NGSS.HS-PS1-6

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

• increase

• decrease

• remain the same

• double

At what time (in seconds) is equilibrium established?

• 0 seconds

• 1 second

• 5 seconds

• 10 seconds

Which of the two graphs reaches equilibrium?

• The left one.

• The right one.

• Both of them.

• Neither.

Phosphorus(V) chloride decomposes at high temperatures into phosphorus(III) chloride and chlorine according to the equation.

PCl₅(g) ⇌ PCl₃(g) + Cl₂(g)

Which one of the graphs best represents the variation with pressure of the yield of chlorine at equilibrium?

• 
• 
• 
• 

Le Chatelier'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

An exothermic reaction is allowed to reach equilibrium. If heat energy is then removed, the equilibrium will shift

• toward the middle

• toward the reactant side

• toward the product side

Tags

NGSS.HS-PS1-6