Section B 7.10.10 (a.) Circle all structures shown below that are chiral. CH₂ Br CH, H₂C. CH2CH; H3 C CH3 НО-С СОН نام H

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Section B 7.10.10 (a.) Circle all structures shown below that are chiral. CH₂ Br CH, H₂C. CH2CH; H3 C CH3 НО-С СОН نام HT "H Bi CHI H. [2 marks] 1.) The specilic rotation of pure (-)-2-butanol is -13.5°. What % of a mixture of the two enantiomeric forms is the (+)-form if the specific rotation of this mixture is +7.0°? [2 marks] 16.) (-)-Lactic acid has a specific rotation of -3.5°. What is the specific rotation of a solution containing 7.5 g of(-)-lactic acid and 2.5 g of (+)-lactic acid? [2 marks) pr HS (d.) A newly isolated natural product was shown to be optically active. If a solution of 2.0 g in 10 mL of ethanol in a 50 cm tube gives a rotation of -2.57°, what is the specific rotation of this natural product? (2 marks) fte. Draw the structure of (S)-2-bromobutane. Take particular care to indicate stereochemistry properly ---