Haber Process

Question 0

What reaction does higher pressure favour ?

Answer 0

The forward reaction because because there are four molecules on the left for every two on the right

Question 1

What is the equation for this process?

Answer 1

N(2) + 3H(2) reversible reaction sign 2NH(3) + heat

In bracket means smaller number

Question 2

What pressure is used ?

Answer 2

200 atmospheres

Question 3

Which reaction is exothermic and what does thesis mean for the equilibrium ?

Answer 3

The forward reaction is exothermic, this means the equilibrium will move the wrong way away from NH(3) so the yield would be greater at a lower temperature

Question 4

What does lowering the temperature do to the rate of reaction ?

Answer 4

It reduces it

Question 5

What is the temperature used in this process and why?

Answer 5

450 degrees centigrade because it is a compromise between the maximum yield and fastest rate of reaction
E.g it is better to get 10% yield in 20 seconds than 20% yield in 60 seconds.

Question 6

Where is the ammonium formed ?

Answer 6

In a condenser which cools the gas to a liquid which is removed

Question 7

What is iron used for in the process

Answer 7

It is a catalyst this increases the rate of reaction but not the yield