本書話this reaction會give out toxic gas，我想問隻toxic gas 係咩gas??
更新1:
解釋埋點解會give out that gas
有關urea-methanal的實驗
2007-01-30 4:44 am
製造urea-methanal 時，add powdered urea to the methanal solution 再加埋conc.sulphuric acid
本書話this reaction會give out toxic gas，我想問隻toxic gas 係咩gas??
本書話this reaction會give out toxic gas，我想問隻toxic gas 係咩gas??
回答 (1)
2007-01-31 9:57 am
✔ 最佳答案
No toxic gas is formed in the polymerization of urea-methanal. However, the polymerization is exothermic, and heat evolved can vaporize some methanal monomer, which is toxic.
收錄日期: 2021-04-25 19:43:46
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070129000051KK03608