Alkanes - Global Warming And Catalytic Converters

Question 1

Describe the process of how global warming occurs

Answer 1

CO2 absorbs infra red radiation emitted from the sun and emits some of this energy back towards the earth

Question 2

How do oxides of nitrogen form

Answer 2

Car engines provide high temperatures and pressure for nitrogen and oxygen from the air to react

Question 3

How does ground level ozone form

Answer 3

Hydrocarbons and nitrogen oxides react in the presence of UV light

Question 4

Describe the process of flue gas removal

Answer 4

Waste gases are passed through a scrubbing chamber containing a slurry of calcium oxide and calcium carbonate

Question 5

Give an example of a waste gas

Answer 5

Sulfur dioxide

Question 6

Why is calcium carbonate used

Answer 6

An alkali neutralised the acidic Sulfur dioxide

Question 7

Give the worded equation for the reaction that occurs in the srubbing chamber when calcium oxide is used

Answer 7

Calcium oxide reacts with water and Sulfur dioxide to form calcium sulphite

Question 8

Give the symbol equation for the reaction that occurs when calcium oxide is used in scrubbing chamber

Answer 8

CaO(s) + 2H2O(l) + SO2(g) + 1/2O2(g) —> CaSO4.2H2O

Question 9

Give the symbol equation for when calcium carbonate is used in the scrubbing chamber

Answer 9

CaSO3(s) + SO2(g) + 1/2O2(g) —> CaSO4(s) + CO2(g)