Temperature and pressure in urea autoclave is_________________?
Correct answer: B. 190°C and 200 atm
- A. 120°C and 300 atm
- B. 190°C and 200 atm
- C. 400°C and 550 atm
- D. 200°C and 10 atm
Explanation
Industrial urea synthesis is carried out near 190°C and about 200 atm so that ammonia and carbon dioxide remain reactive and the carbamate-to-urea reaction proceeds effectively. The other temperature-pressure combinations are not typical urea-autoclave conditions.
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