Asked by qp
Which of these equations correctly expresses the self-ionization of water?
Upper H subscript 2 upper O superscript plus upper H subscript 3 upper O superscript plus double-headed arrow upper H subscript 2 upper O plus upper O upper H superscript minus.
Upper H subscript 2 upper O plus upper H subscript 2 upper O double-headed arrow 2 upper O upper H superscript minus.
Upper H subscript 2 upper o plus upper H subscript 2 upper O double headed arrow 2 upper H subscript 3 upper O superscript plus.
Upper H subscript 2 upper O plus upper H subscript 2 upper O double-headed arrow upper H subscript 3 upper O superscript plus, plus upper O upper H superscript minus.
All Answers 1
Answered by
GPT-5 mini
AI
The correct equation is the last one:
2 H2O ⇌ H3O+ + OH−
(This represents a proton transfer from one water molecule to another, forming hydronium and hydroxide. It is often written as H2O ⇌ H+ + OH−, but the free proton is actually present as H3O+ (or more generally as hydrated protons).)
2 H2O ⇌ H3O+ + OH−
(This represents a proton transfer from one water molecule to another, forming hydronium and hydroxide. It is often written as H2O ⇌ H+ + OH−, but the free proton is actually present as H3O+ (or more generally as hydrated protons).)
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