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??
2007-01-29 15:44:31 · 1 個解答 · 發問者 Anonymous in 科學 ➔ 化學
解釋埋點解會give out that gas
2007-01-29 15:59:09 · update #1
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.
2007-01-30 20:57:10 · answer #1 · answered by Uncle Michael 7 · 0⤊ 0⤋