Which represents the self-ionization of water at 25°c? h2o + h2o 2h2 + o2 h2o + h2o h2o2 + h2 h2o + h2o 4h+ + 2o2- h2o + h2o h3o+ + oh-

Option (d) is the correct answer.

Explanation:

When molecules of same substance combine together to result in the formation of ions then this type of reaction is known as self-ionization.

For example,

So, here two molecules of water are combining and they result in the formation of hydronium ion () and hydroxide ion ().

Hence, this reaction is a self-ionization reaction.

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