Equilibrium

What are the two factors to look for when determining if the reaction is at equilibrium?

• Forward reaction rate is faster than the reverse and concentrations are equal
• Forward and reverse reaction rates are equal and concentration is conctant
• Forward and revers reaction rates are equal and concentration is equal
• Forward reaction rate is faster than the reverse and concentration is equal

Tags

NGSS.HS-PS1-6

Identify the incorrect statement about achieving equilibrium.

• achieved when product and reactant concentrations are equal

• achieved when forward and reverse reaction rates are same

• achieved when concentration of reactants is stable/constant

• achieved when concentration ratio of reactants to products becomes stable, thus fixing the equilibrium constant (equilibrium position)

Tags

NGSS.HS-PS1-6

This symbol indicates that a reaction is ____________

• reversible
• irreversible

Tags

NGSS.HS-PS1-6

How does a catalyst change during a reaction?

• It is part of the products
• It combines with the reactants
• It precipitates
• It remains unchanged

2SO₂(g)+O₂(g) ⇌ 2SO₃(g)

H = -450kJ

Adding SO_2(g) will

• shift equilibrium right

• shift equilibrium left

• increase rate of reaction

• have no change

Tags

NGSS.HS-PS1-5

2SO₂(g)+O₂(g) ⇌ 2SO₃(g)

H = -450kJ

Increasing the temperature will...

• shift equilibrium right

• shift equilibrium left

• increase pressure

• have no change

Tags

NGSS.HS-PS1-5

2SO₂(g) + O₂(g) ⇌ 2SO₃(g)

H = -450kJ

Removing O_2(g) will

• shift equilibrium right

• shift equilibrium left

• increase pressure

• have no change

2SO₂(g) + O₂(g) ⇌ 2SO₃(g)

H = -450kJ

Adding SO₃(g) will

• shift equilibrium right

• shift equilibrium left

• increase K

• have no change

Tags

NGSS.HS-PS1-5

2SO₂(g) + O₂(g) ⇌ 2SO₃(g)

H = -450kJ

Increasing the volume of the container will...

• shift equilibrium right

• shift equilibrium left

• slow rate of reaction

• have no change

2SO₂(g)+1O₂(g) ⇌ 2SO₃(g) + Heat

Increasing the pressure on the system will...

• shift equilibrium right

• shift equilibrium left

• slow rate of reaction

• have no change

Tags

NGSS.HS-PS1-6