CHEMICAL EQUILIBRIUM

This symbol indicates that a reaction is ____________

• reversible
• irreversible

Tags

NGSS.HS-PS1-6

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

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

For the reaction...

N_{2 (g)} + 3 H_2(g) ⇌ 2 NH_{3 (g)}

If the pressure in the system is increased, which substance(s) will increase in concentration?

• N₂

• H₂

• N₂ and H₂

• NH₃

Tags

NGSS.HS-PS1-6

What is the effect of increasing the pressure on the following equilibrium: 2NO(g) + O₂ (g) ⇌2NO₂(g)?

• The yield of NO₂ increases

• The yield of NO₂ decreases

• The reaction is slower

• The concentration of O₂ increases.

Tags

NGSS.HS-PS1-6

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

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

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

For the reaction...

heat + N_{2 (g)} + O_{2 (g)} ⇌ 2NO_(g)

If the heat is added to the chemical system, the equilibrium will shift _______.

• left

• right

• left and right

• neither left nor right

For the reaction...

heat + N_{2 (g)} + O_{2 (g)} ⇌ 2NO_(g)

If the heat is removed to the chemical system, the equilibrium will shift _______.

• left

• right

• both left and right

• neither left nor right

For the reaction...

heat + N_{2 (g)} + O_{2 (g)} ⇌ 2NO_(g)

If the heat is added to the chemical system, the concentration of O₂ will _______.

• increase

• decrease

• remain the same

• triple

Tags

NGSS.HS-PS1-5