Lower temperature and large excess of ammonia in urea melt__________________?
Correct answer: B. Decreases biuret formation
- A. Increases biuret formation
- B. Decreases biuret formation
- C. Is undesirable
- D. Does not effect biuret formation
Explanation
Biuret forms when urea condenses, a reaction favoured by higher temperature and insufficient ammonia. Lower temperature and excess ammonia therefore suppress biuret formation, although excessively low temperature can reduce urea conversion.
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