Chapter 2-DF10

Question 1

When does incomplete combustion occur?

Answer 1

When there is a limited supply of oxygen
Products include either carbon monoxide or carbon(soot)

Question 2

What is the equations to form acid rain- sulphuric acid(strong and weak)

Answer 2

Weak- SO2 + H2O = H2SO3
Strong- SO3 + H2O + H2SO4 - ONLY IN THE STRATOSPHERE

Question 3

What are the three side reactions that happen in engines?

Answer 3

S + O2 = SO2
NO
N2 + O2 = 2NO

Question 4

What is the equations to form acid rain- nitrogen oxide?

Answer 4

2NO2 + H2O + 1.502 = 2HNO3

Question 5

When is photochemical smog formed?

Answer 5

When primary pollutants react with sunlight to produce secondary pollutants

Question 6

What are secondary pollutants?

Answer 6

Pollutants that are not directly released into the atmosphere

Question 7

What is a catalytic converter?

Answer 7

A honeycomb of platinum or rhodium- fine powder spread over a ceramic surface- huge surface area`

Question 8

How hot does the catalytic converters have to be to work?

Answer 8

Platinum 240°C
alloy platinum with rhodium 150°C