Le Chatelier's and Equilibrium

2SO_2(g)+O_2(g) ⇌ 2SO_3(g) + Heat

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) + Heat

Increasing the temperature will...

• shift equilibrium right

• shift equilibrium left

• increase pressure

• have no change

Tags

NGSS.HS-PS1-5

2SO_2(g) + O_2(g) ⇌ 2SO_3(g) + Heat

Removing O_2(g) will

• shift equilibrium right

• shift equilibrium left

• increase pressure

• 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

2CrO₄^2- + 2H⁺ → Cr₂O₇^2- + H₂O

What will happen when H⁺ ions are added to the system?

• Position of equilibrium will shift to left and become more yellow

• Color of system will turn all yellow

• Color of system will turn all orange

• Equilibrium will shift to right and become more orange

Tags

NGSS.HS-PS1-5

Increase in temperature of the reactants can do one of the following

• Slow collision frequency
• Allow less effective collision between the particles
• Neutralise the reaction
• increase collision between the particles thus increasing the rate.

Tags

NGSS.HS-PS1-5

Why does a catalyst increase the rate of reaction?

• it produces extra energy for the reactants
• it increases the speed of the reactant particles
• it increases the frequency of particle collisions
• it reduces the activation energy of the reaction 

Which of the following increase the reaction rate?

• less surface area
• lower temperature
• an inhibitor
• increased concentration

Tags

NGSS.HS-PS1-5

What happens when the system is cooled (heat is removed)?

• The reaction shifts left, towards the reactants

• The reaction shifts right, towards the products

• There is no shift

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-4

NGSS.HS-PS3-4

What happens when fluoride ions (Na⁺) are removed?

• The reaction shifts left, towards the reactants

• The reaction shifts right, towards the products

• There is no shift

Tags

NGSS.HS-PS1-5