更新1:
actually I know displacement will take place, what I do concern is calcium also will react with water contained in the solution, so which reaction is more preferable? or both occur at the same time?
有關displacement reaction
回答 (1)
2007-11-05 3:36 am
✔ 最佳答案
The ionic equation for the reaction:Ca + Zn2+ --- > Ca2+ + Zn
Displacement reaction will occur since calcium is more reactive than zinc.
Here are the observations:
The calcium metal will decrease in size ( since it loses electrons and becomes calcium ions ).
A layer of grey metal will coat onto the metal surface ( since zinc ions gain electrons and become zinc metal).
2007-11-06 22:35:50 補充：
You're right, both reactions occur at the same time.
參考: My Chem Knowledge
收錄日期: 2021-04-20 15:53:40
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071104000051KK03696