Answer: (3) hydrogen ions as the only positive ions in solution
Explanation: Arrhenius acids are substances which dissociate in water to give [tex]H^+[/tex] ions.
For example: [tex]HCl[/tex] is an Arrhenius acid.
[tex]HCl\rightarrow H^++Cl^-[/tex]
Arrhenius bases are substances which dissociate in water to give [tex]OH^-[/tex] ions.
For example: [tex]NaOH[/tex] is an Arrhenius base.
[tex]NaOH\rightarrow Na^++OH^-[/tex]