Combustible Fuels and Pollution

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what is a a major cause of extra acidity?
Sulfur dioxide
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what contains sulfur cpompounds?
Hydrocarbon fuels(petrol,diesel oil)
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If this is not deliberately added then what does it naturally occur as?
Impurities
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Where are most of these impurities removed?
Oil refinaries
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What happens when hydrocarbon is burned?
Sulfur reacts with oxygen to form sulfur dioxide gas
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When sulfur dioxide is dissolved in the water in the clouds what mixture does it form?
A mixture of acids including sulfurous acid H2O + SO2 ---->H2SO3
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What is the reaction when sulfurous acid is oxidised by oxygen in the air?
It forms sulfuric acid 2H2SO4 + O2 --->2H2SO4
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How can sulfuric acid and sulfurous acid cause problems when it falls as rain?
-Crops do not grow well when soil is too acidic.-Excess acidity in rivers/lakes prevent fish eggs hatching and can kill fish/insects
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How doe acid rain affect weathering?
It increase wethering in buildings made of limestones or marble and breaks structure
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What doe these rock contain?
Pure calcium carbonate
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What does this react with?
Sulfuric acid
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What is the equation?
Calcium carbonate + Sulfuric acid -->Calcium Sulfate + Water + CO2
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*** does it affect corrosion in metals?
It increase it e.g iron/steel making them weak
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What is the equation?
iron + Sulfuric Acid -->iron(ii)Sulfate +Hydrogen
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Card 2

Front

what contains sulfur cpompounds?

Back

Hydrocarbon fuels(petrol,diesel oil)

Card 3

Front

If this is not deliberately added then what does it naturally occur as?

Back

Preview of the front of card 3

Card 4

Front

Where are most of these impurities removed?

Back

Preview of the front of card 4

Card 5

Front

What happens when hydrocarbon is burned?

Back

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