如題。TAS要準備&收集NH3
請各高人指點可以用咩方法?
同埋有D咩要注意???
CHEM TAS。如何準備NH3 GAS??
2007-12-19 7:33 am
回答 (2)
2007-12-19 3:10 pm
✔ 最佳答案
利用銨鹽(如NH4NO3)+氫氧化鈉(NaOH)..加熱..反應會出氨氣利用向上導氣法收集氣體(14+1*3=17<28.8)
離子方程式如下:
NH4+ + OH- --> NH3 +H2O
氫氧化鈉具腐蝕性，加熱時要慢慢攪伴
2007-12-19 10:47 pm
Use a mixture of NH4Cl & Ca(OH)2 in ratio of 4:5 by mass in a boiling tube, use CaO lump as drying agent, heat the mixture and dry NH3 gas will be collected in a upward gas jar .
NH4Cl + Ca(OH)2 ------> NH3(g) + CaCl2(s) + H2O(g) ---- CaO ---> dry NH3 gas
NH4Cl + Ca(OH)2 ------> NH3(g) + CaCl2(s) + H2O(g) ---- CaO ---> dry NH3 gas
參考: me
收錄日期: 2021-04-29 19:41:17
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071218000051KK04321