Haber Process

Question 1

Is the Haber process exothermic or endothermic?

Answer 1

Exothermic

Question 2

Equation of Haber process

Answer 2

N2(g) + 3H2(g) <—> 2NH3(g)

Question 3

Effect of low pressure on the Haber process

Answer 3

Low yield

Question 4

Effect of high pressure on Haber process

Answer 4

High equipment cost

Question 5

Uses of ammonia

Answer 5

Plastics
Fertiliser

Question 6

Why use an iron mesh for the catalyst?

Answer 6

Huge surface area

Question 7

Why does the catalyst have to be replaced?

Answer 7

Poisoned by impurities in gas stream

Question 8

Raw materials for Haber process

Answer 8

Nitrogen from air
Hydrogen from methane & water

Question 9

Specific conditions for Haber process

Answer 9

250 atm
670K

Question 10

Effect of high temperature on Haber process

Answer 10

Goes in endothermic direction

Question 11

Effect of low temperature on Haber process

Answer 11

Low rate of reaction

Question 12

Steps in Haber process

Answer 12

1) H & N flow continuously over catalyst
2) Ammonia liquefied & piped off
3) Unreacted H & N fed back into reactor

Question 13

Is Haber process reversible?

Answer 13

Yes