這是什麼焓變化 ????

http://img27.imageshack.us/img27/3084/58645291.jpg
The answer is: C. Ca²⁺No matter whether it is cation or anion

1. The higher the charge of the ion

the more negative the heat of hydration is.2. The smaller the size of the ion

the more negative the heat of hydration is.Ca²⁺ has the most negative heat of hydration because1. Ca2 ion carries higher charges than other ions.2. Ca²⁺ is the smallest among the three cations

and the anions normally have greater sizes because of the increase in repulsion due to the extra electron. 參考資料 fooks
To Tsui heat of hydration 中文翻成什麼??等等給最佳解答!
heat of hydration 中文是「水合能」。

heat of hydration,焓,C.,cation,answer,electron,Ca2,repulsion due,the charge,increase

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