Combustible Fuels and Pollution 0.0 / 5 ? ChemistryCrude oil, cracking and hydrocarbonsGCSEEdexcel Created by: sara.5Created on: 16-04-18 08:15 what is a a major cause of extra acidity? Sulfur dioxide 1 of 14 what contains sulfur cpompounds? Hydrocarbon fuels(petrol,diesel oil) 2 of 14 If this is not deliberately added then what does it naturally occur as? Impurities 3 of 14 Where are most of these impurities removed? Oil refinaries 4 of 14 What happens when hydrocarbon is burned? Sulfur reacts with oxygen to form sulfur dioxide gas 5 of 14 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 6 of 14 What is the reaction when sulfurous acid is oxidised by oxygen in the air? It forms sulfuric acid 2H2SO4 + O2 --->2H2SO4 7 of 14 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 8 of 14 How doe acid rain affect weathering? It increase wethering in buildings made of limestones or marble and breaks structure 9 of 14 What doe these rock contain? Pure calcium carbonate 10 of 14 What does this react with? Sulfuric acid 11 of 14 What is the equation? Calcium carbonate + Sulfuric acid -->Calcium Sulfate + Water + CO2 12 of 14 *** does it affect corrosion in metals? It increase it e.g iron/steel making them weak 13 of 14 What is the equation? iron + Sulfuric Acid -->iron(ii)Sulfate +Hydrogen 14 of 14
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