The two enantiomers of 2-methyl-1- butanol have the specific rotations of (±)5.75° respectively. What is the specific rotation of a racemic mixture of 2-methyl- 1-butanol? O a. -5.75° O b. +3° O c. 0° O d. +5.75° Clear my choice
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- For the given ee values, calculate the percentage of each enantiomer present. Q: 90% eeA solution prepared by mixing 10 mL of a 0.10 M solution of the R enantiomer of a compound and 30 mL of a 0.10 M solution of the S enantiomer was found to have an observed specific rotation of +4.8. What isthe specific rotation of each of the enantiomers? (Hint: mL * M = millimole, abbreviated as mmol)could someone help me answer this please? I've tried and i keep getting it wrong. (R)-2-bromobutane is an optically active compound with a specific rotation of -23.1°. A solution of 2-bromobutane stereoisomers has an observed specific rotation of 10.0°. Calculate the percent enantiomeric excess (%ee) of this mixture.
- 1. A solution has 80% (R)-2-bromobutane and 20% (S)-2-bromobutanea. What is the “enantiomeric excess” of (R)-2-bromobutane? b. If pure (R)-2-bromobutane rotates light 100º to the right, how much rotation would occur for a solution with 80% (R)-2-bromobutane and 20% (S)-2-bromobutane c. If a solution has a 50/50 mixture of (R)- and (S)-2-bromobutane, what would be the enantiomeric excess and the optical purity? 2. A mixture of two enantiomers has as observed rotation of -18°. The specific rotation of the (-) enantiomers is -27°. Find the % of the two enantiomers in the solution.1. A solution of (S)-2-butanol (molar mass = 74.12) is observed to have a rotation in a 10 cm path length of +16.2 degrees. If the molar specific rotation of (S)-2-butanol is +135.2 degrees, what is the concentration of (S)-2-butanol in grams per liter? 2. After an attempt to resolve a racemate into its enantiomers, the observed rotation is +22.4 degrees per g/L. If the known specific rotation is +24.2 degrees per g/L,, what is the % enantiomeric excess of the compound? 3. If the % enantiomeric excess of a chiral compound is 88.2%, what is its chiral purity?Calculate the specific rotation of each isomer in a mixture containing 10 mL (0.10M) of the S enantiomer and 30 mL (0.10M) of R enantiomer . Given the specific rotation of mixture =+4.8
- which is true if a mixture of enantiomer with a specific rotation of +2 if specific rotation of pure(r) enantiomer is +80? 1. almost racemic mixture 2. mixture contains 100% enantiomeric excess of (r) 3. (s)>(r) 4. (s)<(r)(iii) Calculate the specific rotation of each enantiomer in a mixture containing 10 mL (0.10 M) of (2S, 3R, 5S) enantiomer and 30 mL (0.10 M) of (2R, 3S, 5R) enantiomer. Given the specific rotation of the mixture = +4.8°.When determining R AND S rank these groups from highest to lowest priority
- A solution is prepared by mixing 5 mL of a 0.20 M solution of the S enantiomer of a compound and 10 mL of a 0.20 M solution of the R enantiomer. The specific rotation of that solution was -7.00. a.) Calculate the millimoles of each enantiomer in the mixture.b.) Calculate the% enantiomer in excess (% e.e).c.) Calculate the specific rotation of each pure enantiomer.Draw all stereoisomers of 3,4-hexanediamine. Label each sterocenter with the appropriate R/S designation to show hardness. Indicate the relationship(enantiomers or diasteromers) between every possible pairing of compounds. Label each compound as chiral or achiral, and if there is a mess compound, label it as such.one of these compound has a specific rotation of +6.9 degrees. Which compound might this be? What do you expect the specific rotation of the remaining compound to be?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°