Chem 162 - Lab 6 - Name Alice Meng-Ju Hsieh Lab Partner...

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Total points = 60 Part I: Preparation of cis-Bis (glycinato) 0.5 g 0.25 g 249.72 g/mole 0 moles 1 pt 75.08 g/mole 0 moles 1 pt limiting reagent is 1 pt 0.775 g 2 pts 0.396 g % Yield 51.12 % 2 pts 2 pts Name: Alice Meng-Ju Hsieh Lab Partner: Steven Humphrey Qz section: AA copper (II) monohydrate, Cu(gly) 2 .H 2 O g CuSO 4 .5H 2 O g NH 2 CH 2 CO 2 H (glycine) molar mass CuSO 4 .5H 2 O moles CuSO 4 .5H 2 O molar mass NH 2 CH 2 CO 2 H (glycine) moles NH 2 CH 2 CO 2 H (glycine) NH 2 CH 2 CO 2 H (glycine) g Cu(gly) 2 .H 2 O expected based on limiting reaagent g Cu(gly) 2 .H 2 O recovered in reaction EXPERIMENT 6 SPECTROSCOPY: SPECTROCHEMICAL SERIES Discuss your % yield. It is high or low? What are the contributing factors to this high or low % yield? % yield = Actual Yield / Theoretical Yield x 100% = 0.396g / 0.775g x 100% = 51.12% This percentage yield is a bit low. Possible contributing factor to this quite low percentage yield could be that there were left over products on the filter paper that was not able to scrape off. Thus we result in a loss of mass, which leads to a lower percentage yield than what it should have been. Note: the molecular formula above
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Chem 162 - Lab 6 - Name Alice Meng-Ju Hsieh Lab Partner...

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