# H2O2 + NaCl + H(+) reaction?

So I found these reduction potentials online:

\begin{alignat}{2} \ce{H2O2 + 2H+ + 2e- \;&<=> 2H2O}\qquad &&E=1.78\ \mathrm V\\ \ce{2Cl- \;&<=> Cl2 + 2e-}\qquad &&E=-1.36\ \mathrm V \end{alignat}

If the net reduction potential is positive will chlorine gas be spontaneously formed when salt and hydrogen peroxide are mixed in a acidic solution?

• Exactly what is an acidic base...? Anyway, theoretically, yes. However kinetically the reaction may not be favoured. – orthocresol Dec 13 '15 at 2:49

Not necessarily. If you get the pH right and the stoichiometry absolutetly 1:1 then you might form $\ce{Cl2}$. However your reaction will compete with other reaction and you will more likely oxidize the chlorine into chlorate ions ($\ce{ClO-}$, $\ce{ ClO2-}$, $\ce{ClO3-}$, or $\ce{ClO4-}$).