T = Catalytic converters, air pollution

Question 1

Purpose of a catalytic converter?

The 3 different conversions that it does?

Answer 1

To convert toxic substances into less toxic substances

• NO2/NO –> N2 + O2
• CO –> CO2
• Unburnt hydrocarbons –> CO2 + H2O

Question 2

Why does a catalytic converter have micro ducts?

Answer 2

To increase the surface area for the reactions to take place

Question 3

3 metals that make up the metal blocks in the catalytic converter

Answer 3

1. Platinum
2. Rhodium
3. Palladium

Question 4

Limitations of a catalytic converter? (2)

Answer 4

1- Inefficient if it is not hot

2-Doesn’t start working for the first 6 miles when driving