Answer:
Balanced half-reaction: [tex]O_{2}(g)+2H_{2}O(l)+2e^{-}\rightarrow H_{2}O_{2}(aq.)+2OH^{-}(aq.)[/tex]
Explanation:
Balanced half-reaction for the reduction of gaseous oxygen to aqueous hydrogen peroxide in basic solution should be written in the following step-by-step manner:
Half-reaction: [tex]O_{2}(g)\rightarrow H_{2}O_{2}(aq.)[/tex]
Balance H and O in basic medium: [tex]O_{2}(g)+2H_{2}O(l)\rightarrow H_{2}O_{2}(aq.)+2OH^{-}(aq.)[/tex]
Balance charge: [tex]O_{2}(g)+2H_{2}O(l)+2e^{-}\rightarrow H_{2}O_{2}(aq.)+2OH^{-}(aq.)[/tex]
Balanced half-reaction: [tex]O_{2}(g)+2H_{2}O(l)+2e^{-}\rightarrow H_{2}O_{2}(aq.)+2OH^{-}(aq.)[/tex]
