Sinh học - Chapter 3: Water and the fitness of the environment
Occasionally, a hydrogen atom shared by two water molecules shifts from one molecule to the other. The hydrogen atom leaves its electron behind and is transferred as a single proton - a hydrogen ion (H+). The water molecule that lost a proton is now a hydroxide ion (OH-). The water molecule with the extra proton is a hydronium ion (H3O+).
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- ap3_waterandtheenvironment_5865.ppt