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c. You have titrated the first sample of your unknown sample. Using the average molarity of the permanganate solution from Question 1b, complete Trial 1 column. In your calculation, don't forget that only part of the unknown solution is used in the titration. Average molarity Mass of Unknown #100 of the permaganato Mattial Buret Reading solution is Final Buret Reading Volume of Blank 8-108X10 M Volume of Titrant Mass of Fe(II) in sample % Fe in sample Trial 1 1.103 g 2.17 mL 24.91 mL 0.03 mL

c. You have titrated the first sample of your unknown sample. Using the average molarity of the permanganate solution from Question 1b, complete Trial 1 column. In your calculation, don't forget that only part of the unknown solution is used in the titration. Average molarity Mass of Unknown #100 of the permaganato Mattial Buret Reading solution is Final Buret Reading Volume of Blank 8-108X10 M Volume of Titrant Mass of Fe(II) in sample % Fe in sample Trial 1 1.103 g 2.17 mL 24.91 mL 0.03 mL

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Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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c. You have titrated the first sample of your unknown sample. Using the average molarity of the permanganate solution from Question 1b, complete Trial 1 column. In your calculation, don't forget that only part of the unknown solution is used in the titration. Average molarity of the permaganata solution is 8-108X103M Mass of Unknown #100 Initial Buret Reading Final Buret Reading Volume of Blank Volume of Titrant Mass of Fe(II) in sample % Fe in sample Trial 1 1.103 g 2.17 mL 24.91 mL 0.03 mL
Transcribed Image Text:c. You have titrated the first sample of your unknown sample. Using the average molarity of the permanganate solution from Question 1b, complete Trial 1 column. In your calculation, don't forget that only part of the unknown solution is used in the titration. Average molarity of the permaganata solution is 8-108X103M Mass of Unknown #100 Initial Buret Reading Final Buret Reading Volume of Blank Volume of Titrant Mass of Fe(II) in sample % Fe in sample Trial 1 1.103 g 2.17 mL 24.91 mL 0.03 mL
2. Your partner has completed three acceptable titrations for standardizing the dilute potassium permanganate solution and he gives you all of the data. The solid standard used was FeSO4-7 H₂O, and it was dissolved and diluted to 100.00 mL. a. Calculate the molarities for the trials (Hint: you are going to need the balanced ionic equation and the formula mass of ferrous sulfate heptahydrate.) Mass of Standard Volume of Blank Volume of Standard Initial Buret Reading Final Buret Reading Volume of Titrant Molarity KMnO4 2.047 g 0.04 mL Trial 1 10.00 mL 1.57 mL 19.75 mL Trial 2 10.00 mL 2.15 mL 20.98 mL Trial 3 10.00 mL 1.30 mL 19.33 mL Trial 4 10.00 mL 3.53 mL 21.93 mL b. Examine your partner's results and determine which three trials should be used to determine the average molarity of the permanganate solution; then using the appropriate values calculate the average molarity of the potassium permanganate solution.
Transcribed Image Text:2. Your partner has completed three acceptable titrations for standardizing the dilute potassium permanganate solution and he gives you all of the data. The solid standard used was FeSO4-7 H₂O, and it was dissolved and diluted to 100.00 mL. a. Calculate the molarities for the trials (Hint: you are going to need the balanced ionic equation and the formula mass of ferrous sulfate heptahydrate.) Mass of Standard Volume of Blank Volume of Standard Initial Buret Reading Final Buret Reading Volume of Titrant Molarity KMnO4 2.047 g 0.04 mL Trial 1 10.00 mL 1.57 mL 19.75 mL Trial 2 10.00 mL 2.15 mL 20.98 mL Trial 3 10.00 mL 1.30 mL 19.33 mL Trial 4 10.00 mL 3.53 mL 21.93 mL b. Examine your partner's results and determine which three trials should be used to determine the average molarity of the permanganate solution; then using the appropriate values calculate the average molarity of the potassium permanganate solution.
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