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cherishstone(金幣+1): 謝謝參與
flylrh: 金幣+2, 謝謝交流~ 2012-04-20 12:44:27
看看維基對(duì)alkali的解釋
In chemistry, an alkali is a basic, ionic salt of an alkali metal or alkaline earth metal element. Some authors also define an alkali as a base that dissolves in water.
Difference between alkali and base
The terms "base" and "alkali" are often used interchangeably, particularly outside of a scientific context.
There are various definitions for alkali. Alkali is often defined as a subset of base. However, two subsets are commonly chosen.
A basic salt of an alkali metal or alkaline earth metal[2] (This includes Mg(OH)2 but excludes NH3.)
Any base that is water-soluble and forms hydroxide ions[3][4][5] or the solution of a base in water.[6] (This excludes Mg(OH)2 but includes NH3.)
The second subset of base is also called an Arrhenius base. |
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是該常用維基才對(duì)！學(xué)習(xí)了！ 
