Hydrogen- Fuel Of The Future

Question 1

Most of the H2 comes from where?

Answer 1

Reactions of fossil fuels

- making it nonsustainable

Question 2

What reacts with natural gas, petroleum and coal to produce H2 and CO2?

Answer 2

Steam

Question 3

How can H2 be produced in a renewable way?

Answer 3

Through biomass

Question 4

Process of electrolysis?

Answer 4

2water –> 2H2 + O2

Very expensive

Question 5

What element does hydrogen stock have?

Answer 5

Sulphur organic compounds

- have to be removed

Question 6

Photochemical water splitting

Answer 6

Sun photogenerates electron-hole pairs in semiconductor

Question 7

Photogenerated holes are a powerful _____?

Answer 7

Oxidizer

- the electrons can breakdown water into H2 + O

Question 8

Why do we have to invest a lot of energy into H2?

Answer 8

Because it has a low boiling point that we have to invest lots of energy to keep it cool

Question 9

Does H2 have more or less energy than methane?

Answer 9

We need to burn more H2 per volume to get the same amount of energy as methane

Question 10

Why is the combustion of hydrogen good?

Answer 10

• produces no carbon containing pollutants

- lower combustion temps produce less NOx

Question 11

Why is the combustion of hydrogen bad?

Answer 11

It’s hella explosive

Produces NOx and H2O2

Question 12

What is the equation?

Answer 12

H2 + 1/2O2 –> water vapour