1.5 - Kinetics

Question 1

What must particles do in order to react?

Answer 1

Collide with sufficient energy and the correct orientation

Question 2

Do most collisions result in a reaction

Answer 2

No

Question 3

Define activation energy

Answer 3

The minimum energy that particles must collide with for a reaction to occur

Question 4

What is the effective increasing temperature on rate of reaction?

Answer 4

Increasing temperature increase rate of reaction much higher proportion of particles have energy greater than the activation energy therefore more frequent successful collisions

Question 5

What is the effective increasing concentration/pressure on rate of reaction?

Answer 5

Increased concentration/pressure equals increased rate of reaction
There are more particles in a given volume -> more frequent successful collisions -> increased rate

Question 6

What is a catalyst?

Answer 6

A substance which increases the rate of reaction but is not used up in the reaction

Question 7

How do catalysts work and how do they increase the rate of reaction?

Answer 7

Provide an alternative reaction pathway