Problem: What does it mean to say that water autoionizes? Water will cause many ionic compounds to dissociate without additional input of energy. Water is polar, like an ion is polar. Therefore it is autoionic. Water is a good conductor of electricity, and when it conducts, it ionizes. A water molecule can donate a proton to another water molecule, forming H 2O+ and OH- in solution. 

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What does it mean to say that water autoionizes? 

Water will cause many ionic compounds to dissociate without additional input of energy. 

Water is polar, like an ion is polar. Therefore it is autoionic. 

Water is a good conductor of electricity, and when it conducts, it ionizes. 

A water molecule can donate a proton to another water molecule, forming H 2O+ and OH- in solution. 

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