Principles of Chemistry I Exam 5

T or F: In a chemical reaction, particles must collide and they must collide in a specific manner.

True

T or F: More collisions in a chemical reaction = faster reaction.

True

Endothermic or Exothermic?

Endothermic

Endothermic or Exothermic?

Exothermic

Endothermic or Exothermic?

Products have lower PE than reactants.

Exothermic

Endothermic or Exothermic?

Products have higher PE than reactants.

Endothermic

Increasing these increases the reaction rate

Temperature, pressure, # particles

Increasing these decreases the reaction rate

Volume, activation energy

Optimize these for configuration effective ness

Lowest number of gas particles, simplest structure

Transition state

Peak of the activation energy

The catalyst does what?

Lowers activation energy

PF at high T

When is this preferred?

PF all T

When is this preferred?

PF all T

When is this preferred?

PF low T

When is this preferred?

RF

When is this preferred?

PF high T

When is this preferred?