What is the enantiomeric excess (% ee) of a sample of carvone which exhibits a specific rotation of 55 given that the specific rotation of (S)-carvone is 61? Does the unknown sample primarily have the R or S absolute configuration? *Pick two answers. It is a racemic mixture. S ི ིི ིི་ ར 74
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- The specific rotation of (S)-2-iodobutane is +15.90°. Determine the percentage composition of a mixture of (R)- and (S)-2-iodobutane with a specific rotation of -7.95°If the optical rotation of a pure enantiomer A is +10 and the optical rotation of a mixture of two enantiomers (A+B) is -4 (Negative 6), what is the percentage of A and B in that mixture?What are the stereochemical configurations of the two diastereomers of (2S,4R)-2,4-hexanediol? Use the wedge/hash bond tools to indicate stereochemistry where it exists. Include H atoms at chiral centers only. If a group is achiral, do not use wedged or hashed bonds on it.
- (S)-carvone is an optically active compound with a specific rotation of +61.1°. A solution of carvone stereoisomers has an observed specific rotation of 25.0°. Could someone help me Calculate the percent enantiomeric excess (%ee) of this mixture? I tried it but I keep getting the wrong answer.If the sample of the pure R enantiomer of a molecule has a specific rotation of -40 degrees and your mixture of that molecule has an 82% ee S, what is the observed specific rotation of your sample?What would the specific rotation of pure (S) carvone be considering R carvone has a specific rotation of -60?
- The specific rotation of (S)-carvone (at 20 degrees) is +61. A chemist prepared a mixture of (R)-carvone and its enantiomer, and this mixture had an observed rotation of -55. (a) What is the specific rotation of (R)-carvone at 20 degrees? (b) What percentage of the mixture is (S)- carvone? Choose from the following options. 1. 90% (S)-carvone and 10% (R) 2. 10% (S)-carvone and 90% (R) 3. 95% (S)-carvone and 5% (R) 4. 5% (S)- carvone and 95% (R)Viktor measures out 2.100 g of the ibuprofen from the bottle and dissolves it in 15.0 mL of ethanol. He transfers this solution to a 1.0 dm long tube and the polarimeter gives him a reading of +7.3416 deg for this sample. The literature specific rotation for ibuprofen is 57 deg. What is the observed specific rotation for this sample? What is the enantiomeric excess (EE) for this sample?An attempt at synthesizing a certain optically-active compound resulted in a mixture of its enantiomers. The mixture had an observed specific rotation of +11.5°+11.5°. If it is known that the specific rotation of the ?R enantiomer is −38.0°−38.0°, determine the percentage of each isomer in the mixture.
- (+)-Tartaric acid has a specific rotation of +12.0°. Calculate the specific rotation of a mixture of 68% (+)@tartaric acid and 32% (-)@tartaric acidThe absolute configuration of BAGO is (dextrorotatory, levorotatory, R, S). The melting point of its enantiomer will be (higher, lower, equal) than/with 197.2. The relative configuration of its enantiomer will be (dextrorotatory, levorotatory, R, S). The density of BAGO is (higher, lower, equal, twice) the density of its enantiomer.the stereocenter labelled in blue has an a. R absolute configuration b. S absolute configuration