Catalytic converters

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  • Created by: Sopha8
  • Created on: 21-05-14 18:52
Explain the problems with burning fossil fuels
1) incomplete combustion 2) produces NO 3)sulphur dioxide- produces sulphuric acid in atmosphere-acid rain=corrodes buildings, destroyes trees
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How do industries solve the problem of sulphur dioxide?
mesh with calcium oxide-neutralise to calium sulphate- plaster
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What are 2 pollutants produced when alkanes are used as fuel? whats the problem with them?
1) CO- incomplete combustion, poisnous, bind to haemglobin, 2) NO -smog=respiratory damage
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What is a catalytic converter?
remove pollutants from cars, transition metals eg Palladium/ Rhodium
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How are catalytic converters used to remove CO and NO? whats the reactions?
1)CO= NO oxisidises it to CO , 2CO + 2NO------>2CO + N, 2) 2NO---->N + O
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What is cracking? why is it done?
breaking long chain alkanes into smaller hydrocarbons, high deman products
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What are the positives and negatives of the 2 types of cracking?
thermal- negative=high temps- expensive, damage environment, positive=even residue, catalytic-negative=shorter chains, positive=catalyst speed up reaction & lower temp so cuts costs
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Other cards in this set

Card 2

Front

How do industries solve the problem of sulphur dioxide?

Back

mesh with calcium oxide-neutralise to calium sulphate- plaster

Card 3

Front

What are 2 pollutants produced when alkanes are used as fuel? whats the problem with them?

Back

Preview of the front of card 3

Card 4

Front

What is a catalytic converter?

Back

Preview of the front of card 4

Card 5

Front

How are catalytic converters used to remove CO and NO? whats the reactions?

Back

Preview of the front of card 5
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