點解metal ion + ammonia 會變到 metal hydroxide??
ammounia都冇hydroxide ion....
同埋想問問點解有d metal hydroxide會redissolve番既??係咪同佢地structure有關?
chem勁人入入黎幫手..metal ion同ammonia reaction既問題....
2008-08-29 5:41 pm
回答 (1)
2008-08-29 9:07 pm
✔ 最佳答案
ammonia gas係冇hydroxide ions,但aqueous state就有因為aqueos ammonia有以下的equilibrium
NH3 + H2O → NH4+ + OH- **reversible process
所以metal ions能夠與ammonia solution內的hydroxide ions反應產生metal hydroxides
至於你所講的情況...我可以粗略咁解釋
係high concentration時, 某些metal hydroxides 會再和hydroxide ions反應產生complex..當那complex is water soluble, 這樣metal hydroxide就會redissolve
參考: myself
收錄日期: 2021-04-13 16:01:05
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080829000051KK00557