Hydrogen Flashcards
Give the chemical equation for hydrogen gas
H2
What are the two main ways of manufacturing hydrogen gas?
Steam reforming of natural gas
Electrolysis of water
What is steam reforming of natural gas?
This involves reacting methane with steam in the presence of a suitable catalyst
What is Electrolysis of water?
The production of hydrogen gas and oxygen by the electrolysis of water
What is the downside of using the electrolysis of water to produce hydrogen gas?
It can be more expensive then steam reforming due to the high cost of electricity
What is the main benefit of using the electrolysis of water to produce hydrogen gas?
It produces hydrogen gas and oxygen which doesn’t contribute to global warming
What is the downside of using steam reforming of natural gas to produced hydrogen gas?
It produces carbon monoxide which is a pollutant
What is the main advantage of using steam reforming over the electrolysis of water to produce hydrogen gas?
Steam reforming of natural gas is much cheaper than the electrolysis of water
Other than the electrolysis of water and steam reforming of natural gases, what is the third method of producing hydrogen gas?
Hydrogen gas is produced in oil refineries when dehydrocyclisation is carried out
What is the most important use of hydrogen?
In the manufacture of ammonia
Other then the manufacture of ammonia what is another use of hydrogen?
Hydrogen is used during hydrogenation which is the addition of hydrogen to a vegetable oil
This process is used when making margarine
Why is the burning of hydrogen as a fuel considered environmentally friendly?
As water is the only product formed
What prevents us from using hydrogen gas as a fuel?
Hydrogen is explosive when in air which causes problems during its storage
