Reaction Rates

Question 1

Activation energy

Answer 1

The minimum energy required to start a reaction by the breaking of bonds.

Question 2

Catalyst

Answer 2

A substance that increases the rate of a chemical reaction without being used up in the process; a catalyst provide an alternative route for the reaction with lower activation energy.

Question 3

Economical benefits of using catalysts

Answer 3

Saves energy costs as reactions can now occur in:

• lower temperatures
• low pressures

Question 4

Pollution control benefits of using catalysts

Answer 4

• Reduces CO2 emission/ greenhouse emissions

- Reduces the amount of fuel burnt

Question 5

Sustainability benefits for using catalysts

Answer 5

• Less waste produced due to higher atom economy

- reaction can take place with less toxic solvents