Answer
For $ClO^-$$_{(aq.)}$ and $H^+$$_{(aq.)}$, the standard-state conditions are $a\approx1 M$.
For $Cl_2$ $_{(g)}$, $a= 1 bar$.
For $H_2O_{(l)}$, $a=1$.
Work Step by Step
For $ClO^-$$_{(aq.)}$ and $H^+$$_{(aq.)}$, the standard-state conditions are $a\approx1 M$.
For $Cl_2$ $_{(g)}$, $a= 1 bar$.
For $H_2O_{(l)}$, $a=1$.
