Flashcards in C1b-using Carbon Fuels Deck (12)
Why is the amount of fossil fuels being burnt is increasing?
Increasing world population
Growth of use in developing countries eg india china
What is a fuel?
A substance that reacts with oxygen to release energy
How can you test for carbon dioxide?
Limewater will turn milky if carbon dioxide is present
What is the word equation for complete combustion?
Hydrocarbon + oxygen--> carbon dioxide + water
What is the balanced symbol equation for the complete combustion of methane?
CH4 + 2O2 --> CO2 + 2H2O
Why does incomplete combustion take place?
When there isn't enough oxygen when you're burning a fuel
What are the advantages of complete combustion over incomplete combustion?
It doesn't produce any poisonous gases like carbon dioxide
Doesn't produce soot
What is the word equation for incomplete combustion?
Hydrocarbon + oxygen --> carbon dioxide + water + carbon monoxide + carbon
What is the balanced symbol equation for the incomplete combustion of methane? (carbon)
CH4+ O2 --> C + 2H2O
What factors should be considered when choosing the best fuel?
Usage (ease of use)
Describe an experiment to show that combustion of a hydrocarbon in a plentiful supply of air produces carbon dioxide and water
The water pump draws gases from the burning hexane through the apparatus. Water collects inside the cooled U tube and you can show that its water by checking its boiling point. The limewater turns milky, showing that carbon dioxide is present.