Question

C. Analysis of Oxalate Complex or Unknown Mass of sample Trial 1 Trial 2 Trial 3 Weighing bottle initial mass 3.253 g 3.274 g 3.268 g Weighing bottle final mass 3.373 g 3.394 g 3.388 g Mass of sample .12 g .12 g .12 g Titration Final reading 17.6 ml 17.8 ml 18.4 ml Initial reading .2 ml .2 ml .2 ml Volume of KMnO4 17.4 ml 17.6 ml 18.2 ml Calculations Millimoles of oxalate, C2O4 2- Mass of oxalate, C2O4 2- Percent oxalate, C2O4 2- Average percent oxalate Standard deviation If you analyzed your oxalate complex from earlier, complete the following: Theoretical percent oxalate in your complex (show calculations) Determine the purity of your complex as (experimental % oxalate / theoretical % oxalate) x 100% = % purity.

          C. Analysis of Oxalate Complex or Unknown
Mass of sample Trial 1 Trial 2 Trial 3
Weighing bottle initial mass 3.253 g 3.274 g 3.268 g
Weighing bottle final mass 3.373 g 3.394 g 3.388 g
Mass of sample .12 g .12 g .12 g
Titration
Final reading 17.6 ml 17.8 ml 18.4 ml
Initial reading .2 ml .2 ml .2 ml
Volume of KMnO4 17.4 ml 17.6 ml 18.2 ml
Calculations
Millimoles of oxalate, C2O4 2-
Mass of oxalate, C2O4 2-
Percent oxalate, C2O4 2-
Average percent oxalate Standard deviation
If you analyzed your oxalate complex from earlier, complete the following:
Theoretical percent oxalate in your complex (show calculations)
Determine the purity of your complex as (experimental % oxalate / theoretical % oxalate) x 100% = % purity.

C. Analysis of Oxalate Complex or Unknown
Mass of sample Trial 1 Trial 2 Trial 3
Weighing bottle initial mass 3.253 g 3.274 g 3.268 g
Weighing bottle final mass 3.373 g 3.394 g 3.388 g
Mass of sample .12 g .12 g .12 g
Titration
Final reading 17.6 ml 17.8 ml 18.4 ml
Initial reading .2 ml .2 ml .2 ml
Volume of KMnO4 17.4 ml 17.6 ml 18.2 ml
Calculations
Millimoles of oxalate, C2O4 2-
Mass of oxalate, C2O4 2-
Percent oxalate, C2O4 2-
Average percent oxalate Standard deviation
If you analyzed your oxalate complex from earlier, complete the following:
Theoretical percent oxalate in your complex (show calculations)
Determine the purity of your complex as (experimental % oxalate / theoretical % oxalate) x 100% = % purity.

Added by Jack T.

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