Chemistry Question?
2016-10-17 5:36 pm
Explain why calcium hydroxide is written as Ca(OH)2 rather than H2CaO2 and serves as a base rather than an acid.
回答 (4)
2016-10-17 5:47 pm
✔ 最佳答案
Calcium hydroxide is an ionic compound which contains Ca²⁺ and OH⁻ ions in the ratio 1 : 2.Hence, the ionic formula can be written as Ca²⁺(OH⁻)₂. Not to write the charges, the formula becomes Na(OH)₂.
Compounds containing OH⁻ ions are basic. Ca(OH)₂ is basic because it contains OH⁻ ions.
2016-10-17 6:37 pm
The divalent Ca 2+ has two monovalent OH- groups attached to it. This gives the formula Ca(OH)2 .
2016-10-17 5:36 pm
Ca
收錄日期: 2021-04-20 16:32:41
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20161017093649AAFhn6I