PC5

Question 1

What is activation energy?

Answer 1

The minimum amount of kinetic energy particles need to react

Question 2

What is the effect of a higher temperature on the rate of reaction?

Answer 2

Speeds up the rate of reaction because the molecules will on average have more kinetic energy and will move faster. So a greater proportion of molecules will have at least the activation energy and be able to react. The Maxwell-Boltzmann distribution curve shifts to the right and downwards. The total number of molecules stays the same

Question 3

What are the 3 ways you can measure the rate of reaction?

Answer 3

1. Time taken for precipitate to form
2. Change in mass
3. Gas volume given off