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What is the reaction in the harbour process
N2(g)+ 3H2(g) equilibrium 2NH3 (g) + heat
What pressure is the harbour process at and why
200 atmospheres
How is possible to give best yield without making plans to expensive to build
What temperature is the harbour process at and why
450°c
forward reaction is exothermic so increasing temperature would move equilibrium position the wrong way
lower temperatures mean lower rate of reaction
450°is a compromise between maximum yield and speed of reaction
What are the three essential elements in fertilisers
Nitrogen phosphorus and potassium
Method to prepare the fertiliser ammonium sulphate
Put Ammonium solution and indicator into flask
set up burette over it
slowly add dilute sulphuric acid until the indicator changes colour to show its neutralise
do it again and put in the exact same amount of dilute sulphuric acid
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