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Flashcards in The Haber Process Deck (17):
1

What is it

A way of making ammonia

2

What's ammonia used to make

Fertiliser and other chemicals

3

What does the haber process involve

Reacting N2 and H2 with an Fe catalyst at 450 degrees Celsius and 200 atmospheric pressure

4

How much ammonia is present at any given time

Only a small amount

5

What happens to any Nh3 product and what happens next

It's cooled, liquified and collected and the remaining H2 and N2 are recycled to react again

6

What's N2 obtained form

Fractional distillation of liquid air

7

Whats H2 obtained form

Reacting natural gas and steam

8

If we condense and remove NH3 when it's formed what do we prevent

The reverse reaction occurring

9

What does the haber process rely on

Le chatelier's principle

10

If temperatures raised which way does the equilibrium move

Left

11

If temperatures decreased which way does equilibrium move

Right

12

When the forward reaction is exothermic what happens to the yield if the. Temp is raised/lowered

Raised - yield decreases
Lowered - yield increases

13

When the forward reaction is endothermic what happens to the yield if the. Temp is raised/lowered

Raised - yield increases
Lowered - yield decreases

14

What are the best conditions for the haber process (temp/pressure)

High temp
Low pressure

15

What is the problem with reactions at high pressure

Dangerous and expensive to maintain

16

At high pressure which reaction is favoured

One that produces least number of molecules

17

At low pressure which reaction is favoured

One that produces most number of molecules