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Data and Postlab Questions – Redox Titration
How will you collect data for this
Data and Postlab Questions – Redox Titration
How will you collect data for this experiment?in-personYour data should be recorded and analyzed using the provided Excel file: Excel Template
Standardization of Potassium Permanganate Solution
Measurements for Standardization of Potassium Permanganate Solution
Enter your measurements from lab with the correct number of decimal places
Trial 1
Trial 2
Mass of empty flask (grams)
98.056126.378
Mass of flask + sodium oxalate (grams)
98.062126.533
Initial volume of KMnO4 (mL)
0.000.00
Final volume of KMnO4 (mL)
206.0044.70
Determination of Concentration of Unknown Oxalate Solution
Measurements for Determination of Concentration of Unknown Oxalate Solution
Enter your measurements from lab with the specified units and correct number of decimal places
Trial 1
Trial 2
Volume of oxalate solution (L)
0.0250.025
Initial volume of KMnO4 (mL)
0.000.00
Final volume of KMnO4 (mL)
37.0017.50
Attendance
This QR code needs to be scanned by your TA to confirm that you have completed data collection and cleaned up your workspace.
Standardization of Potassium Permanganate Solution
Calculations for Standardization of Potassium Permanganate Solution
Calculate the following values with the correct number of decimal places.
Trial 1
Trial 2
Mass of empty flask (grams)
98.056
126.378
Mass of flask + sodium oxalate (grams)
98.062
126.533
Mass of sodium oxalate (grams)
Moles of sodium oxalate (mol)
Initial volume of KMnO4 (mL)
0.00
0.00
Final volume of KMnO4 (mL)
206.00
44.70
Volume of KMnO4 added (mL)
Volume of KMnO4 added (L)
Moles of KMnO4 (mol)
Molarity of KMnO4
Average Molarity of KMnO4
Calculations for Determination of Concentration of Unknown Oxalate Solution
Calculate the following values with the correct number of decimal places.
Trial 1
Trial 2
Volume of oxalate solution (L)
0.02500
0.02500
Initial volume of KMnO4 (mL)
0.00
0.00
Final volume of KMnO4 (mL)
37.00
17.50
Volume of KMnO4 added (mL)
Volume of KMnO4 added (L)
Moles of oxalate (mol)
Molarity of oxalate
(4pts)
Average Molarity of oxalate
Using your data, answer the following prompt in at least one full paragraph. Submissions must be typed directly into LabFlow.
1. The unknown oxalate solution was prepared by dissolving around 5 grams of sodium oxalate in 1 liter of water. This was not an exact measurement and discrepancies do arise between bottles of solution. Discuss in at least two sentences how accurate your oxalate concentration is based on this information.
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