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Part 1. Results Report your observations from the lab. Include units as needed. Polarimetry dm Pathlength of cell [(+)-isomer] (experimental) Observed Rotation (experimental) (aD) of (+)-isomer (calculated) Specific rotation of (+ +173 isomer (literature) Enantiomeric Excess of 2.33 (+)-isomer Percent (+) isomer Percent () isomer 0.055 +4.04 +73.45 g/mL degrees degrees degrees 51.17 48.84
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There are number of ways by which we can calculate optical purity One of the method I am showing is observed rotation experimental rotation of pure sample Optical Purity - From the data given OP +4.04° /173°ー2.33% Another Method Optical purity is also called enatiomeric excess (ee) Therefore ee - Purity of the sample can be increased by recrystallization ld-1lx100 51.17-48.84 ldHl 51.17+48.84 × 100-233** please leave positive rating if you like the solution

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