Ammonia is made from the reaction between nitrogen and hydrogen (temperature 400 °C, pressure, catalyst; unreacted nitrogen and hydrogen recycled).

1. aGive a source of nitrogen. [1]
2. bGive a source of hydrogen. [1]
3. cName the catalyst used in this reaction. [1]
4. dThe rate at which ammonia is formed can be increased by increasing the pressure. Explain this in terms of the Kinetic Particle Theory. [2]
5. eState the pressure, in atmospheres, that is used in the industrial manufacture of ammonia. [1]
6. fDescribe an energy level diagram to show the progress of the exothermic reaction for the production of ammonia, labelling reactants, products, ΔH and activation energy (draw it on paper). [4]

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