A solution is prepared in a 0.900 L volumetric flask by placing 16.5 g of KCl and adding water to dissolve the solid, then filling the flask to the mark. Determine the molarity of an AgNO3 solution if the 30.1 mL of the KCl solution react exactly with the 33.0 mL of the AgNO3solution?
Sodium thiosulfate, Na2S2O3, is used a fixer in photographic film developing. The amount of Na2S2O3 in a solution can be calculated by a titration with iodine, I2, according to the equation: 2Na2S2O3 (aq) + I2 (aq) --> Na2S4O6 (aq) + 2 Na I(aq) Determine the concentration of the Na2S2O3 solution if 25.70 mL of a0.2210 M I2 solution react exactly with a 100.0 mL sample of the Na2S2O3 solution.