Choosing Reaction Conditions (OCR GCSE Chemistry A (Gateway Science Suite)): Quizzes
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Practise the questions
8 questions from this quiz
Why does lowering temperature increase ammonia yield in the Haber process?
Why does lowering temperature increase ammonia yield in the Haber process?
Forward reaction is exothermic
What compromise temperature is used in ammonia production?
What compromise temperature is used in ammonia production?
450°C
Why is a compromise temperature needed rather than a very low temperature?
Why is a compromise temperature needed rather than a very low temperature?
Low temp reduces reaction rate
What effect does increasing pressure have on ammonia production?
What effect does increasing pressure have on ammonia production?
Favours ammonia production
How many moles of gas are on the ammonia side compared to the reactant side?
How many moles of gas are on the ammonia side compared to the reactant side?
2 moles versus 4 moles
What compromise pressure is used in ammonia production?
What compromise pressure is used in ammonia production?
200 atm
Why are very high pressures not used despite favouring ammonia production?
Why are very high pressures not used despite favouring ammonia production?
They are expensive to maintain
What are the optimised conditions for ammonia production?
What are the optimised conditions for ammonia production?
450°C and 200 atm