问题：请教热力学酸度和动力学酸度的区别
类型：求助 (悬赏分:3分)
提问：aminium
等级：▲▲▲
版块：物理化学()
信誉：98%
回复：4
阅读：1320
时间：2005-01-24 16:22:16 编辑加入/取消收藏订制/取消短消息举报该贴

thermodynamic acidity
kinetic acidity

回复人：aminium,▲▲▲ (一个普通人) 时间：2005-01-26 22:29:41 编辑	1楼
这两个东东到底什么含义啊？那位大虾解释一下吧。物化的东西忘光了，也许就没学过？不知道了，这些天看得文献里老有物理有机的内容。等这个问题解决了我还有一堆要问呢。不要建议我去看书，那个办法我会，但要留到最后再用：）

回复人：lmnssa,▲▲ (中国石油大学（北京）化学工程与工艺学生) 时间：2005-02-02 15:35:08 编辑	2楼
我也非常想知道他们的本质，真的没有人知道吗？

回复人：sara,▲ (每天进步一点点) 时间：2005-04-15 06:31:56 编辑

3楼

From: http://web.pdx.edu/~lutzr/acids_bases.doc

My explanation in a sentence:

The strength of an acid or base refers to its effectiveness as a proton donor or acceptor, respectively. Effectiveness can be expressed in more than one way. For example, the strength of an acid could be taken as a reflection of how fast proton transfer occurs to a given reference base. Proton transfer rates, although usually very fast, can be measured, and rate constants for many acids are available. This kind of quantitative measure of acid strength is called kinetic acidity.

It is more common, however, to express acidity another way, and that is to determine the extent to which the acid has protonated a reference base after equilibrium has been achieved. Water is always the reference base in order to maintain consistency in comparing acids. For a strong acid, for example HCl above, the equilibrium lies far to the right and there is little molecular HCl present at equilibrium. For a weak acid, the equilibrium lies to the left. To ”put a number on it”, the equilibrium constant can be measured and used as an expression of acid strength. This is called equilibrium acidity or thermodynamic acidity.

回复人：aminium,▲▲▲ (一个普通人) 时间：2005-08-08 00:14:32 编辑	4楼
接受答案了。

得分人：sara-1,

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