Molarity of standard KMnO4 solution: Mass of empty flask (g) Mass of flask with sample (g) Initial buret level Final buret level Qualitative comments Trial 1 125.250 g 135.068 g 0.45 mL 41.43 mL CI Light pink 41.43 mL-0.45 mL = 40.98 mL of KMnO, moles x 43.68 mL-0.39 mL = 43.29 mL of KMnO, moles x Trial 2 46.79 mL-0.43 mL = 46.36 mL of KMnO, moles x 125.825 g 135.201 g 0.39 mL 43.68 mL Over-titrated/pink 0.1000 M solution 1000 mL 0.1000 M 0.1000 M solution 1000 mL 0.1000 M solution 1000 mL Trial 3 QUESTIONS AND CALCULATIONS For each calculation, you will be required to show detailed work steps. Make sure the number of each question is clear according to what was in the introductions and procedure document. Meaning, make sure that your use of the template doesn't mess up the numbering! 1) Determine the moles of KMnO4 required for each trial. 126.195 137.192 0.43 mL 46.79 Light pink Page 1 of 4 = 0.004098 moles of KMnO4 Moles KMnO4 in Trial 1 0.004098 M = 0.004329 moles of KMnO4 Moles KMnO4 in Trial 2 0.004329 M = 0.004636 moles of KMnO4 Moles KMnO4 in Trial 3 0.004636 M 2) Calculate the moles of H₂O2 present in the sample for each trial. Use Equation editor here to show all your work! You can copy and paste these when you need more lines Moles H₂O₂ in Trial 1 Put your answer here with units! Use Equation editor here to show all your work! You can copy and paste these when you need more lines Moles H₂O₂ in Trial 2 Put your answer here with units! Use Equation editor here to show all your work! You can copy and paste these when you need more lines Page 2 of 4 Moles H₂O₂ in Trial 3 Put your answer here with units! 3) How many grams of H₂O2 must have been present for each trial? Use Equation editor here to show all your work! You can copy and paste these when you need more lines g H₂O₂ in Trial 1 Put your answer here with units! Use Equation editor here to show all your work! You can copy and paste these when you need more lines g H₂O₂ in Trial 2 Put your answer here with units! Use Equation editor here to show all your work! You can copy and paste these when you need more lines g H₂O₂ in Trial 3 Put your answer here with units!