Equilibrium #2/Le Chatelier's Principle

A system at equilibrium means it is still reacting.

• True
• False

Tags

NGSS.HS-PS1-6

For an endothermic reaction, heat can be thought of as:

• a reactant
• a product
• either it has no effect
• neither it effects both sides equally.

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

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

Tags

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-PS1-6

For the reaction...
heat  +  N₂  +  O₂  <−>  2NO
If the heat is added to the chemical system, the equilibrium will shift _______.

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

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

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

The picture shows a reversible chemical reaction taking place. How can equilibrium be reached?

• Stopper the flask.
• Add more reactants.
• Add more products.
• Cool the contents.

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

For a chemical system at equilibrium, the concentrations of both the reactants and the products must

• decrease

• increase

• be constant

• be equal

Tags

NGSS.HS-PS1-7

Which term identifies a factor that will shift a chemical equilibrium?

• Atomic Radius

• Catalyst

• Decay mode

• Temperature

Tags

NGSS.HS-PS1-6