Pollutants

Question 1

Describe CO2 Origin, environmental effect and the relevant equation

Answer 1

• combustion of fossil fuels (complete)
• greenhouse affect
• CH4+2O2(g)=>CO2(g)+2H2O

Question 2

Describe CO origin, environmental affect and relevant equation

Answer 2

• incomplete combustion of hydrocarbons in fossil fuels, burning biomass
• toxic gas and photochemical smog
• CH4+1.5O2=>2H2O+CO

Question 3

Describe particulates origin, environmental affect and relevant equation

Answer 3

• volcanoes, burning fuels and coals
• penetrate deep into the human body causing heart attacks and lung cancer
• CH4 + 2O2 => C(s) + 2H2O + CO2

Question 4

Describe in unburnt hydrocarbons origin, environmental affect and relevant equation

Answer 4

• plants and unburnt fuel from engines
• photochemical smog
• C8H18 + 7.5O2 => 6CO + 2C + 9H2O

Question 5

Describe NoX origin, environmental effect and relevant equation

Answer 5

• combustion of fuels in power stations, nitrogen and oxygen in the air reacting inside engines
• acid rain and photochemical smog
• N2+O2=> 2NO

Question 6

Describe SO2 origin, environmental effect and relevant equation

Answer 6

• volcanoes, burning of fuels containing Sulfid
• toxic gas and acid rain
• S+O2=>SO2

Question 7

Describe the Ozone’s (O3) origin and environmental effect

Answer 7

• fossil fuels
• toxic gas

Question 8

Is Diesel sustainable? And what are its advantages and disadvantages?

Answer 8

• No it comes from fossil fuels and produces CO2
• adv less CO produced than petrol
• dis more NO and particulates

Question 9

Is LPG sustainable? Advantages and disadvantages of its use?

Answer 9

• less CO is produced and much less NOx than diesel. Still made from crude oil but 20% less CO2 per mile
  -adv 20% less CO2 per mile than petrol, road + fuel taxes are lower
  -dis LPG filling stations are rare

Question 10

Is ethanol sustainable? Adv and dis of using

Answer 10

• carbon neutral production as made from crops
  -adv little to no CO2 produced
  -dis still uses some petrol as ethanol too volatile without, land used to make could be used for food

Question 11

Is biodiesel sustainable? Adv and dis?

Answer 11

• carbon neutral production, biodegradable, no sulphur and less particulates
• adv made from waste oil, carbon neutral production, biodegradable, no sulphur less particulates
  -dis uses more NOx than fossil fuels

Question 12

Is hydrogen sustainable? Adv and dis?

Answer 12

• renewable, produces no CO2, CO or CO when burnt
• adv renewable, can be stored, produces no CO2, CO or CO when burnt
  -dis often uses electricity to produce which comes from fossil fuels