Reaction rate & equilibrium (EOT Revision)

Which of the following best explains why increasing temperature increases the reaction rate according to the collision model?

• Particles are destroyed faster

• More particles dissolve in the solvent

• Particles collide more often and with more energy
  

• The size of the particles increases

Which of the following would most likely increase the rate of a reaction involving a solid and a liquid?

• Decreasing the temperature

• Crushing the solid into a powder

• Adding an inhibitor

• Lowering the concentration of the liquid

In the Haber process: N₂ + 3H₂ ⇌ 2NH₃, which change will increase the production of ammonia?

• Increasing the temperature

• Increasing the pressure

• Adding more ammonia

• Using larger gas molecules

Catalysts increase the amount of product formed in a reaction.

• True
• False

If a catalyst is added to a reaction at equilibrium, what will happen?

• The position of equilibrium will shift to the right

• The position of equilibrium will shift to the left

• The rate of both forward and reverse reactions will increase equally

• The reaction will stop completely

What happens when you increase the concentration of hydrochloric acid in a reaction with magnesium?

• The reaction speeds up because there are more acid particles to collide with magnesium

• The reaction slows down because there are fewer acid particles

• The reaction stops completely

• More collisions happen between acid and magnesium particles