Napag-isip ko tuloy dapat ganito ang formula.
2HCl + H2O2 + Cu2 = 2CuCl + 2H2O
Hydrogen ion is removed from HCl, with it being aqueous, and reacts with the reactive oxygen from the peroxide to form water, leaving the Chlorine ion react and combine with the metallic copper to form copper chloride.
But HCl will not react with the metallic copper without the hydrogen peroxide because copper is not much reactive than hydrogen to Chlorine.
So dapat pala ang ratio ay 2:1
2 Muriatic + 1 H2O2
hehe, sorry po but i stand corrected to other ideas base on theory.