# Calculate the number of moles na 2 c 2 o 4 used in

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1. Calculate the number of moles Na 2 C 2 O 4 used in each of the three samples. Moles Na 2 C 2 O 4 Sample #1: .11151g * 1 mol Na 2 C 2 O 4 / 133.9985 g Na 2 C 2 O 4 = 8.589*10 -4 Moles 1 2 3 Moles Na 2 C 2 O 4 Sample 8.5989x10 -4 8.2165x10 -4 8.3135x10 -4 2. Calculate the concentration of Potassium Permanganate in the Standard Solution for each of the three titrations you performed.
3. If the first of the three titrations was crude, discard this result. Otherwise, include it. Average the titration results to determine the concentration of Permanganate in the Standard Solution. Avg Molarity = (.0101 + .0102 + .0103)/3 = .0102 M Titration of Potassium Ferric Oxalate Trihydrate 1. Calculate the number of moles Oxalate present in each of the three samples using the titration data.
2. Calculate the number of grams Oxalate present in each sample.
3. Calculate the weight percentage Oxalate in each sample.
4. If the first of the three titrations was crude, discard this result. Otherwise, include it.
5. Using the chemical formula, calculate the percentage Oxalate in Potassium Ferric Oxalate.