[化學]中三化學(CaCl2)

2009-10-07 3:49 am
CaCl2點解吸左水之後變成一舊舊

回答 (3)

2009-10-07 4:05 am
✔ 最佳答案
anhydrous CaCl2 (無水氯化鈣)can be used as dehydrating agent. The calcium chloride will absorb the water to form teh calcium chloride hydrate (水化氯化鈣)

CaCl2 +nH2O = CaCl2.nH2O

calcium chloride hydrate is the 一舊舊 thing you observed =]
2009-10-07 4:15 am
CaCl2 + 2H2O ----> CaCl2‧2H2O 變成吸了水的 Calcium Chloride Dihydrate ,即有水無機鹽,是白色物團 (一舊舊 ),致有此狀。小心灼傷,口、鼻、皮膚均需保護方可接觸。



參考: 化學智識
2009-10-07 3:54 am
因為水含有鐮和鑣。劣杯呂


收錄日期: 2021-04-13 16:52:44
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20091006000051KK01196

檢視 Wayback Machine 備份