The Haber Process

Question 0

What is the equation for the Haber process?

Answer 0

N2. +. 3H2.

Question 1

What is the Haber process?

Answer 1

Named after Fritz Haber

Industrial process - ammonia produced makes fertiliser

Question 2

Describe the Haber process

Answer 2

Nitrogen taken from air
Hydrogen taken from cracking oil fractions
Reaction converts these to ammonia ( but not all converted)
N2 and H2 not converted are recycled

Question 3

What industrial conditions are needed to make fertiliser?

Answer 3

Pressure - high (200)
Temperature - 450 degrees C
Catalyst - iron

Question 4

Describe why Haber process is reversible

Answer 4

High pressure increases percentage yield - forward reaction
High temperature decreases percentage yield - reverse reaction
Lower temperature gives slow reaction rates so high temp used
450 degrees C is optimum temp
Fatalist of iron upset to speed up reaction - keeps costs down
Unused H2 and N2 are recycled
Diagram p.103!