Overview
DISCUSSION
1.The solubility of the K3 [Fe(C2O4 )3 ]● 3H2O product at 0°C is 4.7 g per 100 g water. Given this, calculate the maximum percent yield of product for your own reactant quantities. Assume 20 mL of water is used as your solvent.
2. What percentage of the students in this lab section obtained percent yields that were higher than the maximum calculated in the previous question?
The purpose of the recrystallization step is to aid in the removal of impurities in the crude product.
3. If all other variables were kept constant, determine the effect that the following errors would have on the calculated percent yield of the product. Would the yield be expected to increase, decrease, or would there be no effect? Explain your reasoning
4A. 4.587g of K2C2O4 H2O was used instead of exactly 4.000g .
4B. The recrystallization step was skipped and the experiment went straight to vacuum filtration.
Conclusion:
- Why or why not? What errors did you specifically experience in this experiment? – For example: “The reason for the difference between the actual and anticipated outcomes is that during the experiment errors A and B occurred…
complete Excel data analysis described on pg. 164 of lab manual
– Data Tables
■ Raw Data ■
Class Results
– Figures
■ Histogram
THE KTOF3 DOCUMENT IS THE EXCEL CLASS RESULTS
LAB MANUAL IS POSTED TOO