[Levathian]

I'm trying to understand breaking down molecules into their constituent Ions for precipitation reactions, and sometimes I can't tell if it's supposed to be broken up or not.

Example Equation
HC₂H₃O₂(aq) + KOH(aq) -> H₂O(l) + KC₂H₃O₂(aq)

In the book it's compete ionic equation is
HC₂H₃O₂(aq) + K⁺(aq) +OH(^-(aq) ->> H₂O(l) + K⁺(aq) + C₂H₃O₂^-(aq)

Perhaps I'm failing to recognize what is strictly a molecular compound, but why can't HC₂H₃O₂(aq) be broken up? Are molecules with hydrogen always  a molecular compound with covalent bonds? I was assuming otherwise since it carries a positive charge, "lending" an electron instead of "sharing" electrons as the definition of molecular compound. 

[Borek]

HC₂H₃O₂(aq)

It is quite ambiguous. I guess it is intended to be the acetic acid - and as a weak acid it is not fully dissociated.