Skip to content
Back to quiz
6. what are the raw materials used in the contact process?
- sulfur, air
- sulfur dioxide, water
- sulfur, nitrogen
7. what is the equation for the production of ammonia
- nitrogen + hydrogen ---- ammonia
- nitric acid + hydrogen ---- ammonia
- nitrogen + hydrochloric acid --- ammonia
8. what is the name of the catalyst used?
9. at the cathode aluminium ions:
- lose 3 electrons to form an aluminium atom
- gain 3 electrons to form an aluminium atom
- gain 2 electrons to form an aluminium atom
10. what happens in the reaction: calcium carbonate ---- calcium oxide + carbon dioxide
- calcium carbonate loses electrons to become calcium oxide
- calcium carbonate thermally decomposes to basic calcium oxide
- calcium carbonate is displaced
11. how is hydrogen produced?
- reaction of steam with natural gas
- reaction of water and hydroxide
- reaction of water with natural gas
12. a cathode is ...
- the negative electrode
- the positive electrode
13. identify a cost of the process
- heating to 450°C
- purchasing strong enough pipes to withstand pressure
- increasing the pressure
14. an anode is ...
- the positive electrode
- the negative electrode
15. at the anode oxide ions:
- lose 2 electrons to form an oxygen atom
- gain 2 electrons to form an oxygen atom
- lose 2 electrons to form an oxygen molecule
16. what is a major use of ammonia?
- to make fertilisers
- fertilisers
17. what are 3 uses of sulphuric acid
- treatment of metal, in the hater process, dehydrating agent
- neutralisation reactions, to make drugs / explosives, dehydrating agent
- as a catalyst, to neutralise drugs, hydrating agent
18. what pressure is needed?
- 200 atmospheres
- 2 atmostpheres
- 30 atmospheres
19. what would happen if the pressure was increased?
- higher % yield
- lower % yield
- faster reaction
20. why is the reaction in the hater process called an 'equilibrium' ?
- the rate of the forward reaction is equal to the rate of the backwards
- forwards and backwards reactions are as fast as each other
- forwards and backwards reaction produce same amount of substance each