Dynamic equilibria Flashcards
1
Q
what are fertilisers?
A
they provide mineral ions needed for healthy growth in plants
2
Q
Which are the main elements in fertilisers?
A
Nitrogen, phosphorus and potassium
3
Q
Why do fertilisers need to be soluble?
A
So they can be absorbed by root hair cells
4
Q
How is ammonium nitrate manufactured?
A
reaction between ammonia and nitric acid
5
Q
How is ammonia manufactured?
A
Haber process
6
Q
What is the word equation for the haber process?
A
nitrogen + hydrogen ammonia
7
Q
Which temperature is needed for the Haber process?
A
450oC
8
Q
Which pressure is needed for the Haber process?
A
200 atmospheres
9
Q
Which type of catalyst is needed for the Haber process?
A
iron
10
Q
how is ammonium sulphate made in the lab?
A
reacting ammonia with sulphuric acid. Titration is used.
