polluting the atmosphere

Question 1

what reaction is carbon monoxide produced by

Answer 1

incomplete combustion

Question 2

when are nitrogen oxides produced in the air

Answer 2

when there is enough energy in the air for nitrogen and oxygen to combine

Question 3

write the symbol equation for the reaction between N2 + O2

Answer 3

N2 + O2 —> 2NO (g)

Question 4

when there is a reaction between

nitrogen oxides + water vapour + oxygen

what product is formed

Answer 4

nitric acid

Question 5

what does nitric acid cause

Answer 5

acid rain

Question 6

what are PANS (Peroxyacetyl nitrates) the main pollutant in?

Answer 6

photochemical smog

Question 7

what does sulfur dioxide in the air cause

Answer 7

acid rain

Question 8

why are nitrogen oxides formed in car engines

Answer 8

the nitrogen from the air can be oxidised from the oxygen in the air in a car engine due to high temperatures

Question 9

how is sulfur dioxide formed

Answer 9

when you burn crude oil the sulfur impurities react with oxygen in the air to form sulfur dioxide which causes acid rain

Question 10

what process removes sulfur

Answer 10

flue gas desulfurisation

Question 11

explain the process of flue gas desulfurisation

Answer 11

passing the burnt gases through a flue containing calcium oxide this forms calcium sulfate which is easily removed as it is a white solid

Question 12

write the symbol equation for flue gas desulfurisation

Answer 12

CaO +SO2 –> CaSO3

Question 13

what do carbon particulates cause

Answer 13

exacerbate asthma cause cancer

Question 14

what does carbon dioxide cause

Answer 14

climate change

Question 15

what are the gases given out by power stations called

Answer 15

flue gas

Question 16

what toxic gases do car exhaust fumes include

Answer 16

• carbon monoxide
• oxides of nitrogen
• volatile organic compounds

Question 17

what does acid rain cause

Answer 17

corrosion of buildings

endangers plant and aquatic life