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)-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?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. S 90 90 74 It is a racemic mixture. 66 R 85The 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)
- What is the percentage of the s enantiomer in a sample of carvone that has a specific rotation of +14°, R carvone is -61°.8. The specific rotation of (S)-carvone (at +20°C) 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°C? (b) Calculate the % ee of this mixture. (c) What percentage of the mixture is (S)-carvone?One commercial synthesis of flurbiprofen (the active ingredient in Ansaid and a score of other over-the-counter and prescription nonsteroidal anti-inflammatory drug preparations) gives the enantiomer shown in 94% enantiomeric excess. H CH3 он (a) Assign an R or S configuration to this enantiomer of flurbiprofen. OR What are the percentages of R and S enantiomers in the mixture? (Enter unrounded values.) (b) R: % S: 96
- What is the percentage of the S enantiomer in a sample of carvone that has a specific rotation of +14°, given that the specific rotation of (R)-carvone is -61°? 61.5% O 61% O 32.5% O 38.5%The specific rotation of (R)carvone is -61o. A chemist prepared a mixture of (R)-carvone and (S)-carvone, and the mixture had an observed rotation of -47o. What is the % enantiomeric excess (ee) of the mixture?Thalidomide exists in two enantiomeric isomers as shown below. N (R) NI(S) O If a solution is prepared by adding a 50:50 ratio of two enantiomers what will be the expected observed rotation? Explain your answer in 1-2 sentences.
- (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.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.(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°. 1 Calculate the percent enantiomeric excess (%ee) of this mixture. 4 7 +/- 2 Question 1 of 2 5 8 %ee 3 6 9 0 Submit Tap here or pull up for additional resources ||| Г Xx C x 100