A sodium thiosulfate Na2S2O3 solution has a concentration of 0.175 M. An end point for this titration occurs when 48.94 mL of the sodium thiosulfate solution reacts with 22.45 mL of I2 solution. What is the molar concentration of the I 2 solution? The balanced chemical reaction for these species is:2 Na2S2O3 I2 ? Na2S4O6 2 NaI
