Optimising the Yield of Industrial Processes (VCE SSCE Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
Which raw materials does the chemical industry transform into products?
Which raw materials does the chemical industry transform into products?
Crude oil, natural gas, air, water, metals
What is the primary use of ammonia () in industry?
What is the primary use of ammonia () in industry?
As fertiliser in agriculture
What type of reaction is the Haber process for ammonia production?
What type of reaction is the Haber process for ammonia production?
Reversible and exothermic
Why does increasing pressure increase ammonia yield in the Haber process?
Why does increasing pressure increase ammonia yield in the Haber process?
System shifts to side with fewer gas particles
What are the industrial conditions used for ammonia production?
What are the industrial conditions used for ammonia production?
100-250 atm, 400-450°C, iron oxide catalyst
What effect does a catalyst have on equilibrium yield?
What effect does a catalyst have on equilibrium yield?
No effect on yield
What temperature dilemma exists for exothermic reversible reactions?
What temperature dilemma exists for exothermic reversible reactions?
High temp: high rate, low yield
How many catalyst materials did Haber and Bosch test when developing ammonia synthesis?
How many catalyst materials did Haber and Bosch test when developing ammonia synthesis?
Nearly 2000 materials
What role do promoters play in Haber process catalysts?
What role do promoters play in Haber process catalysts?
Create pores, increase surface area
What is special about the nitrogenase enzyme in nitrogen-fixing bacteria?
What is special about the nitrogenase enzyme in nitrogen-fixing bacteria?
Converts to at ambient conditions