Calculate the molar concentration of a thiosulfate solution from the following information: A 25mL aliquot of a 0.0132MKIO3 solution is added to a flask containing 2g of KI and 10mL of 0.5MHH2SO4. The resulting solution is titrated to a starch endpoint with 32mL of the thiosulfate solution. X Check the number of significant figures. More Information. [0/30 Points] Calculate the weight percent of ascorbic acid in a tablet of Vitamin C from the following data: A 70mg sample of a crushed Vitamin C tablet was dissolved in 40mL of H2SO4 and 20mL of water. Two grams of KI and 20. mL of 0.0106MKIO3 solution was added, and the mixture titrated to a starch endpoint. The titration required 11mL of 0.0650M thiosulfate solution. Weight = Check the number of significant figures. % More Information