C2 - Making ammonia Flashcards
1
Q
What are reversible reactions?
A
Reactions that can go in both directions.
2
Q
What is the word equation for the reaction between nitrogen and hydrogen?
A
Nitrogen + Hydrogen =* Ammonia
3
Q
Fritz Haber solved the problem of making nitrogen and hydrogen react. What was the problem?
A
Nitrogen is not a reactive gas.
4
Q
What are the conditions for the hater process?
A
- iron catalyst
- 200 atm pressure
- 450*C
- recycling system
5
Q
Why are the conditions needed a compromise?
A
- pressure could be higher however it is expensive
- temperature decreases yield but increases reaction speed
6
Q
What affects the cost of making ammonia?
A
- the cost of building the plant
- labour costs
- costs of chemicals
- energy costs
- how fast the reaction will go
7
Q
What is the main use of ammonia?
A
As a fertiliser.
