Equilibrium

CH₄ + 2 O₂ ↔ CO₂ + 2 H₂O + 30 kJ
If CH₄ was removed, what happens to the [O₂]

• Increase
• Decrease
• Left
• Right

CH₄ + 2 O₂ ↔ CO₂ + 2 H₂O + 30 kJ
If CH₄ was removed, what happens to the [CO₂]

• Increase
• Decrease
• Left
• Right

CH₄ + 2 O₂ ↔ CO₂ + 2 H₂O + 30 kJ
If CH₄ was removed, what happens to temperature change?

• Increase
• Decrease
• Left
• Right

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-5

CH₄ + 2 O₂ ↔ CO₂ + 2 H₂O + 30 kJ
If pressure was decreased, what would happen to the temperature change?

• Left
• No Change
• Increase
• Decrease

What causes the reaction to go REVERSE
A  + B ↔ C + D + energy

• Decreasing D
• Increasing C
• Decreasing A
• Decreasing Temperature

What causes the reaction to go FORWARD
A  + B ↔ C + D + energy

• Increasing D
• Increasing C
• Increasing B
• Increasing Temperature

Tags

NGSS.HS-PS1-5

What is LeChatelier's Principle?

• Stresses do not shift a reaction
• Equilibrium does not exist
• A stress only shifts a reaction to the right
• A reaction at equilibrium will shift to relieve a stress

Tags

NGSS.HS-PS1-6

At what time (in seconds) is equilibrium established?

• 0 seconds
• 1 second
• 5 seconds
• 10 seconds

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

If a reaction is reversible and has reached equilibrium, what can be said about the amounts of reactants and products?

• some reactant, some product
• no reactant, all product
• all reactant, no product

Tags

NGSS.HS-PS1-6