Calculate concentration of thiosulfate ion, S2O3^2-, when 1.00 mL of .00500 M Na2S2o3 are added to experiment.
1 mole of Na2S2O3 in solution will dissociate to give 2moles of Na+ ions and one mole of S2O32- ions as follows,
Na2S2O3 -------→ 2Na+ + S2O32-
Now given molarity of Na2S2O3 = ...
Solution provides detailed explanation, including equations, in order to calculate the concentration of thiosulfate ion under a particular circumstance.