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A 2.2 gram sample of Pb₂O3 containing only inert impurities is treated with 20.0 mL of 6 N H₂SO4 and 41 mL of oxalic acid solution (containing 0.0126 grams of H₂C2O4-2 H₂O per milliliter) is added. After reaction is complete, the solution requires 20.00 mL of 0.100 N KMnO4. Calculate the purity of the sample in terms of the percentage of Pb₂O3. Balance the following chemical equations: Pb₂O3 + C₂O4²- + H+ → CO₂ + Pb²+ + H₂O

A 2.2 gram sample of Pb₂O3 containing only inert impurities is treated with 20.0 mL of 6 N H₂SO4 and 41 mL of oxalic acid solution (containing 0.0126 grams of H₂C2O4-2 H₂O per milliliter) is added. After reaction is complete, the solution requires 20.00 mL of 0.100 N KMnO4. Calculate the purity of the sample in terms of the percentage of Pb₂O3. Balance the following chemical equations: Pb₂O3 + C₂O4²- + H+ → CO₂ + Pb²+ + H₂O

Chemistry by OpenStax (2015-05-04)
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter4: Stoichiometry Of Chemical Reactions
Section: Chapter Questions
Problem 91E: A sample of solid calcium hydroxide, Ca(OH)2, is allowed to stand in water until a saturated...
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A 2.2 gram sample of Pb₂03 containing only inert impurities is treated with 20.0 mL of 6 N H₂SO4 and 41 mL of oxalic acid solution (containing 0.0126 grams of H₂C₂O4-2 H₂O per milliliter) is added. After reaction is complete, the solution requires 20.00 mL of 0.100 N KMnO4. Calculate the purity of the sample in terms of the percentage of Pb₂O3. Balance the following chemical equations: Pb₂O3 + C₂O4²- + H+ → CO₂+ Pb ²+ + H₂O
Transcribed Image Text:A 2.2 gram sample of Pb₂03 containing only inert impurities is treated with 20.0 mL of 6 N H₂SO4 and 41 mL of oxalic acid solution (containing 0.0126 grams of H₂C₂O4-2 H₂O per milliliter) is added. After reaction is complete, the solution requires 20.00 mL of 0.100 N KMnO4. Calculate the purity of the sample in terms of the percentage of Pb₂O3. Balance the following chemical equations: Pb₂O3 + C₂O4²- + H+ → CO₂+ Pb ²+ + H₂O
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