Green Hydrogen

Question 1

is hydrogen clean

Answer 1

hydrogen itself is clean but its productiong isnt always

Question 2

steam reforming equation

Answer 2

CH4(g) + H2O(g) = CO(g) + 3H2(g), carbon monoxide is then converted into CO2

Question 3

colour of the hydrogen produced from steam reforming

Answer 3

brown as the release of CO2 as a by product is detrimental to the environment

Question 4

advantages of hydrogen

Answer 4

high energy density, abundant in earth (present in water and most carbon compounds), the sole product of its combustion is water

Question 5

disadvantages of hydrogen

Answer 5

not found as an element, so energy is needed to produce it, very low boiling point so requires signficant energy to liquidify it or high pressures are required if hydrogen is stored as a gas, its explosive so requires careful handing and storage, it is difficult to transport safely

Question 6

what does the colour scheme of hydrogen used to describe

Answer 6

each colour is representative of a rating of the relative environmental impacts of producing the H2

Question 7

green hydrogen

Answer 7

generated through electrolysis using renewable electricity

Question 8

structure of the electrolysis of water in a lab

Answer 8

two electrodes are attached to a power supply, these are submerged in a dilute solution of sulfuric acid and water

Question 9

sulphuric acid formula

Answer 9

H2SO4