Choosing Reaction Conditions (AQA GCSE Chemistry): Quizzes
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Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What is the compromise temperature used in ammonia production?
What is the compromise temperature used in ammonia production?
450°C
Why does lowering temperature increase ammonia yield?
Why does lowering temperature increase ammonia yield?
Forward reaction is exothermic
Why isn't a very low temperature used despite higher yield?
Why isn't a very low temperature used despite higher yield?
Reduces the reaction rate
What is the compromise pressure used in ammonia production?
What is the compromise pressure used in ammonia production?
200 atm
Why does increasing pressure favour ammonia production?
Why does increasing pressure favour ammonia production?
Shifts to side with fewer moles
How many moles of gas are on the ammonia product side?
How many moles of gas are on the ammonia product side?
2 moles
Why isn't very high pressure used for ammonia production?
Why isn't very high pressure used for ammonia production?
Expensive to maintain
What type of reaction is the forward ammonia production?
What type of reaction is the forward ammonia production?
Exothermic
What does the compromise temperature of 450°C balance?
What does the compromise temperature of 450°C balance?
Rate and yield
What do the optimised conditions aim to maximise?
What do the optimised conditions aim to maximise?
Efficiency and economy
Which side has fewer moles of gas in ammonia production?
Which side has fewer moles of gas in ammonia production?
Product side (2 moles)