Kinetics

Question 1

State what is meant by the term activation energy

Answer 1

the minimum amount of energy required for a reaction to occur

Question 2

Explain the collision theory

Answer 2

in a reaction, two things can happen

1. nothing
2. the particles could collide causing a reaction

Question 3

what happens to the rate of reaction when you increase the temperature

Answer 3

1. the particles have more energy which means they collide more frequently (minor factor)
2. more particles have greater energy than the activation energy

Question 4

what happens to the rate of reaction when you increase concentration or pressure

Answer 4

more particles per unit volume so there is more of a chance that the particles will have frequent successful collisions

Question 5

Define what a catalyst is

Answer 5

it lowers the activation energy by providing an alternative pathway for a reaction

Question 6

What happens to the rate of reaction when you add a catalyst

Answer 6

It increases because more particles have enough energy to collide