To measure the quantity of MnCl2 dissolved in an aqueous solution, it was completely converted to KMnO4 using the reaction. MnCl2 + K2S2O8 + H2O to KMnO4 + H2SO4 + HCl Few drops of concentrated HCl were added it was completely converted to KMnO4 using the reaction. MnCl2 + K2S2O8 + H2O to KMnO4 + [...]