LeChatelier

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

Tags

NGSS.HS-PS1-6

For the reaction...
SO_2(g) + O_2(g) <−>  SO_3(g)
If the concentration of SO_2(g)  is increased, the equilibrium of the reaction will ___________.

• shift to the left
• shift to the right
• not shift

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

For the reaction...
SO_2(g) + O_2(g) <−>  SO_3(g)
If the equilibrium shifts to the right, the concentration of O_2(g) will ___________.

• increase
• decrease
• remain the same

Tags

NGSS.HS-PS1-6

For the reaction...
energy +  N_2(g)  +  O_2(g)  <−>  2NO_(g)
If  O_2(g) is removed, the  concentration of N₂ will _______.

• increase
• decrease
• remain the same
• double

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

2SO₂(g)+O₂(g)⇌2SO₃(g)
Removing O₂(g) will

• shift equilibrium right
• shift equilibrium left
• decrease temperature
• have no change

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

2SO₂(g)+O₂(g)⇌2SO₃(g)

Adding O₂(g) will

• shift equilibrium right

• shift equilibrium left

• have no change

Which of the two graphs reaches equilibrium?

• The left one.
• The right one.
• Both of them.
• Neither.

Tags

NGSS.HS-PS1-4

Define chemical equilibrium.

• A reaction is reversible.
• The concentration of the reactants is equal to the concentration of the products.
• The rate of a forward reaction is equal to the rate of the reverse reaction.
• The reaction stops and no further change in concentration occurs.

Tags

NGSS.HS-PS1-6

2A + 3B  <---->  2AB
The reverse reaction forms the substance __________.

• A
• B
• AB
• A + B

2A + 3B  <---->  2AB
The forward reaction forms the substance __________.

• A
• B
• AB
• A + B

Tags

NGSS.HS-PS1-2