Other fuels

What are commercial sources of hydrogen gas?

Steam reforming of natural gas, electrolysis of waer

State advantages of using hydrogen gas itself as a fuel

Not polluting, high energy produced per kg

State disadvantages of using hydrogen gas itself as fuel

Explosive, very small molecules can escape easily, takes a lot of pressure to store large amounts in a small volume

What is the chemical formula for steam reforming of natural gas?

CH4+H(2)O=CO+3H(2)

What is the chemical formula of H2 being produced as cathode in electrolysis of water

4H(2)O+4e=2H(2)+4OH-

What is the chemical formula of oxygen produced as an anode in electrolysis of water

2H(2)O-4e=4H(+)+O(2)

What are other possible fuels?

Hydrogen, ethanol, biodiesel, natural gases from other sources

What are characteristics if ethanol?

Natural, fermentation of sugars using yeast, waste sugar can be used, grains can be used, alcohol can be concentrated by distillation, high octane number makes it a good additive

Why is ethanol added to fuels?

To reduce import of fossil fuels

How can alcohol be concentrated?

Distillation

What is the octane number of alcohol?

113

What is biodiesel produced from?

Algae, rapeseed oil, waste cooking oil

Give examples of methane as another natural gas source

Animal slurry, timber waste, any decomposing organic matter under anaerobic conditions