Chemical Equilibrium

When the rate of the forward reaction is equal to the rate of backward reaction, the system is said to be in

• Chemical Equilibrium
• Chemical Balance
• Stoichiometry
• Chemical Reaction

Tags

NGSS.HS-PS1-6

This symbol indicates that a reaction is ____________

• reversible
• irreversible

Tags

NGSS.HS-PS1-6

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-PS1-6

NGSS.HS-PS1-5

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

• shift equilibrium right
• shift equilibrium left
• increase pressure
• have no change

Tags

NGSS.HS-PS1-6

NGSS.HS-PS1-5

Which of the following is NOT true at equilibrium?

• The forward and reverse reactions proceed at the same rate.
• The concentrations of reactants and products do not change.
• The concentration of the reactants is equal to the concentration of the products.
• The forward and reverse reactions continue to occur.

Tags

NGSS.HS-PS1-6

What are [C] and [D]?

• concentration of reactants

• concentration of products

• energy of reactants

• energy of products

Tags

NGSS.HS-PS1-4

Such reactions which continue in both directions are called:

• Irreversible reactions

• Reversible reactions

• Non-reactive reactions

• dynamic reactions

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-PS1-6

NGSS.HS-PS1-5

Use the following reaction to answer the following questions.

Reaction: N₂(g) + 3H₂(g) ⇌  2NH₃(g)

Which way will the equilibrium shift when the concentration of H₂ is decreased?

• The equilibrium shifts to the left.

• The equilibrium shifts to the right.

• The equilibrium does not change.

• The equilibrium constant changes.

Tags

NGSS.HS-PS1-6

NGSS.HS-PS1-5

Use the following reaction to answer the following questions.

Reaction: N₂(g) + 3H₂(g) ⇌  2NH₃(g)

Which way will the equilibrium shift when the concentration of NH₃ is increased?

• The equilibrium shifts to the left.

• The equilibrium shifts to the right.

• The equilibrium does not change.

• The equilibrium constant changes.

Tags

NGSS.HS-PS1-6

NGSS.HS-PS1-5