Rate Of Reaction

Question 1

What are the 4 factors that affect the rate of a reaction?

Answer 1

• Surface area
• Concentration
• Temperature
• Catalysts

Question 2

What happens when you increase the temperature of a reaction?

Answer 2

Increasing temperature increases the frequency of collisions, since they have more energy, therefore increasing the rate of reaction

Question 3

What happens when you increase the surface area in a reaction?

Answer 3

Increasing surface area increases the frequency of collisions, therefore increasing the rate of reaction

Question 4

What happens if you increase the concentration in a reaction?

Answer 4

Increasing concentration increases the frequency of collisions, therefore increasing the rate of reaction

Question 5

What happens if you add a catalyst to a reaction?

Answer 5

The rate of reaction increases, as the activation energy required is reduced

Question 6

How does increasing the energy of particles increase the rate of reaction?

Answer 6

Particles have more energy so they move quicker, increasing the frequency of collisions and therefore the rate of reaction

Question 7

How does increased surface area increase the rate of reaction?

Answer 7

Increasing surface area means more particles are available to collide, increasing the frequency of collisions and therefore rate of reaction

Question 8

How does increasing concentration or pressure increase the rate of reaction?

Answer 8

increasing pressure or volume means there is a higher number of particles in a given volume, increasing the frequency of collisions and therefore the rate of reaction