(+)-Tartaric acid has a specific rotation of +12.0°. Calculate the specific rotation of a mixture of 68% (+)@tartaric acid and 32% (-)@tartaric acid
Q: A sample of phenylsuccinic acid is measured to have an optical rotation of [a]p = -16.8°. If pure…
A: According to the question, The optical rotation of the sample of phenylsuccinic acid = -16.8…
Q: What is the enantiomeric excess (ee) of a sample of mendalic acid with a specific rotation of +50,…
A:
Q: The specific rotation of (-) isomer is -22˚, with concentration of 4.2 g/100 mL, and pathlength of…
A: Specific rotation, [α]: It is the rotation caused by a sample at a concentration of 1.0 g/mL in a…
Q: 7. A 0.5 gram sample of hoodia gordonii isolated from natural sources yields an observed rotation of…
A: (a)Determine the specific rotation [α] of hoodia gordonii for the given entities:
Q: 13. When 0.095 g of cholesterol is dissolved in 1.00 mL of ether and placed in a sample cell 10.0 cm…
A: Specific rotation of a sample is calculated by the formula given as follows: Specific…
Q: (+)-Tartaric acid has a specific rotation of +12.0° . Calculate the expected specific rotation of a…
A: Given : Specific rotation of pure (+) tartaric acid = +12.0o Since the (+) tartaric acid and (-)…
Q: In the following pair of compounds one is chiral and the other is achiral. Identify each compound as…
A: Chiral molecules usually contain at least one carbon atom with four nonidentical substituents. Such…
Q: A 1.26 M solution of (R)-2-butanol is mixed with an equal volume of a 0.630 M solution of racemic…
A: The angle of rotation of a plane polarized light by the optically active compound is known as…
Q: B When a chiral compound is dissolved in water the observed rotation is 8.4°. If the specific…
A:
Q: The specific rotation of dextrorotatory tartaric acid is +12.7 degrees. A mixture of dextrorotatory…
A:
Q: 10. Write priorities on these groups ( 1= highest, 4 = lowest) and assign the stereocenter as R or…
A: Here we are required to assign R /S configuration to stereocentre.
Q: =rcise 2 Calculate the specific rotation of a compound of molecular weight 150 gm/mole if a 1.0M…
A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…
Q: The specific rotation of (S) butanol is +13.5 if 1.00g of its enantiomer is dissolved in 10.0mL of…
A: Given: Specific rotation of (S) butanol = +13.5 Mass of enantiomer = 1.00 g Volume of ethanol…
Q: If the proton-pump inhibitor, (S)-omeprazole, has a specific rotation (rotation of plane polarized…
A: Given that : Specific rotation of (S)-omeprazole = -155° (S) enantionmer rotate the plane polarized…
Q: When determining R AND S rank these groups from highest to lowest priority
A: Priorities are given according to the CIP rules. 1. Higher the atomic number greater will be its…
Q: After an attempt to resolve a racemate into its entantiomers, the observed rotation is +22.4 degrees…
A:
Q: Rank each set of substituents using the Cahn-Ingold-Prelog sequence rules by numbering the highest…
A: According to Cahn Ingold prelog sequence substituents with higher atomic number has highest…
Q: The specific rotation of (S)-2-iodobutane is +15.90°. Calculate the % composition of a mixture of…
A: Given : Specific rotation of pure (S)-2-Iodobutane = +15.90o And specific rotation observed for the…
Q: Calculate the specific rotation of each isomer in a mixture containing 10 mL (0.10M) of the S…
A:
Q: The specific rotation of optically pure (R,R)-tartaric acid is +12.4. If a mixture of (R,R)- and…
A:
Q: 8. Consider the structure of Quinine, an antimalarial drug below with an optical rotation of -165°.…
A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: Write priorities on each of these groups ( 1 = highest, 4 = lowest) and assign the stereocenter as R…
A:
Q: Which two compounds, when mixed in equimolar amounts, would make a solution that is NOT optically…
A: The equimolar mixture of two compounds will be optically inactive when they are a pair of enantiomer…
Q: Why do you think an axial cyano subsitiuent causes practicaly no 1,3 - diexial stericstraine? Use…
A: The reason for an axial cyano substituent causes practically no 1,3 - diaxial steric strain has to…
Q: 4. The enantiomer shown below is levorotatory. Draw the enantiomer which is dextrorotatory. CH3 H…
A: We'll answer the first question since the exact one wasn't specified. Please submit a new question…
Q: What is the percentage of the R enantiomer in a sample of limonene that has a specific rotation of…
A:
Q: The specific rotation of (S)-2-iodobutane is +15.90°. Calculate the % composition of a mixture of…
A: We are given that specific rotation of (S)-2-iodobutane is +15.90°, and the specific rotation of the…
Q: This reaction gives both high regioselectivity and stereoselectivity. What other products might have…
A: Different items got from the exceptionally sound system and the regioselective response of…
Q: observed rotation
A:
Q: B. A newly isolated natural product was shown to be optically active. If a solution of 2.0 g in 10…
A:
Q: Be sure to answer all parts. In the following pair of compounds one is chiral and the other is…
A:
Q: (S)-Lactic acid has a specific rotation of +3.8. (a) If the ee of a solution of lactic acid is 60%,…
A: This is a measurement to understand that which enantiomer of a compound is predominant.
Q: How useful is the (R) or (S) designation for predicting the sign of an optical rotation? Can you…
A: Here, un this question, we have to discuss wheather the R/S -nomenclature and the sign of optical…
Q: To the right are two enantiomeric natural products with vastly different olfactory properties. I…
A:
Q: The specific rotation of a sample of mandelic acid [PhCH(OH)CO2H] is +12.5° and of pure R-(+)-…
A:
Q: Calculate the e.e. and the specific rotation of a mixture containing 6.0 g of (+)@butan@2@ol and 4.0…
A: Enantiomeric excess (ee) can be defined as a measure of purity which is used for chiral substances.…
Q: (S)-Lactic acid has a specific rotation of +3.8. (a) If the ee of a solution of lactic acid is 60%,…
A: Lactic acid, or lactate, is a chemical by-product of anaerobic respiration—a mechanism by which…
Q: @Calculate (a) the optical purity of a mixture of 3.5 g (-) - menthol and 2.7 g(+) - menthol. (b)…
A:
Q: A mixture contains equal amounts of compounds A–D. a.Which compounds alone are optically active? b.…
A: a. Optical active compounds are those where non-superimposable images are formed. They have a chiral…
Q: Give a structure for (C).
A: Tf2O is trifluoromethanesulfonic anhydride.
Q: If (+)-(2R)-methyl-(1S)-cyclohexanol with a specific rotation of +28 degree. What is the observed…
A: Given data contains, The specific rotation of (+)-(2R)-methyl-(1S)-cyclohexanol is+28 degree. The…
Q: 2. A sample of naproxen (the (S)-enantiomer is the active ingredient in Alleve) was found to have an…
A: Given data is, Observed optical rotation of (S)-enantiomer=+45.50 Optical rotation of pure…
Q: Sx2 reactions involving chiral electrophiles usually proceed with: A) inversion of configuration B)…
A: Interpretation - In the SN2 reaction involving chiral electrophile usually proceed with -…
Q: A compound has a specific rotation of -39.0. A solution of the compound (0.187 g/100 mL) has an…
A: The specific rotation of sample is calculated below in which l is the length of the tube in…
Q: The first step in assigning configuration is to assign the priorities to the groups attached to the…
A: Please find your solution below : The priority is assigned on the basis of atomic and molecular…
Q: Draw all stereoisomers of 3,4-hexanediamine. Label each sterocenter with the appropriate R/S…
A: 4
Q: (- )- Mandelic acid has a specific rotation of - 158°. What would be the specific rotation of a…
A: Given: (-)-Mandelic acid has a specific rotation of -158o. And the mixture contains 50% of…
Q: Please determine the enantiomeric excess of a mixture, 68% of one enantiomer and 32% of the other…
A:
Q: (S)-Lactic acid has a specic rotation of +3.8. (a) If the ee of a solution of lactic acid is 60%,…
A: a. The specific rotation of mixture is given by
(+)-Tartaric acid has a specific rotation of +12.0°. Calculate the specific rotation of a mixture of 68% (+)@tartaric acid and 32% (-)@tartaric acid
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 3 images
- (+) Chloramphenicol is a powerful antibiotic isolated in 1949 from the Streptomyces venezuelae bacterium. Its specific rotation is +18.6°. What is the composition of a mixture of (+) and (-) chloramphenicol whose observed specific rotation is +14.88° ? Select one: A. 60% (+) chloramphenicol and 40 % (-) chloramphenicol B. 70% (+) chloramphenicol and 30 % (-) chloramphenicol C. 90% (+) chloramphenicol and 10 % (-) chloramphenicol D. 80% (+) chloramphenicol and 20 % (-) chloramphenicola) Draw the structure of the compound: (R) -1,1,2-trimethylcyclohexane. b) (+)-Oxalic acid has a specific rotation of +14.0°. Calculate the specific rotation of a mixture of 58% (+)-Oxalic acid and 42% (-)-Oxalic acid.4. (+)-Tartaric acid has a specific rotation of +12.0°. Calculate the specific rotation of a mixture of 68% (+)-tartaric acid and 32% (-)-tartaric acid. C
- (- )- Mandelic acid has a specific rotation of - 158°. What would be the specific rotation of a solution which contains 50% (- )- mandelic acid and 50% (+ )- mandelic acid? А. 0° В. + 79° O C. The value must be experimentally determined D. - 79°The pure D-form of a compound has a specific rotation (D line of sodium, 20° C) of +24°, whereas the pure L- form of the compound has a specific rotation (D line of sodium, 20° C) of -24°. If a scientist has a sample of this compound that is known to be 78% pure D-form (and, therefore, 100% - 78% pure L-form), what will be the observed rotation of this sample? Enter your answer to the nearest hundredth. The units are assumed to be degrees. 13.44The anti-inflammatory agent, (S)-naproxen sodium salt has a specific rotation of +66°. The commercial preparation of the latter agent results in a mixture that has a 97% enantiomeric excess (ee). Na Hooooja moo (S)-naproxen sodium salt (d) What percentage of each enantiomer is obtained from the above commercial mixture? H3CO (e) Provide a reaction scheme for the formation of the (S)-naproxen sodium salt from "acidic" (S)-naproxen.
- CH-ST53 The specific rotation of dextrorotatory tartaric acid is +12.7 degrees. A mixture of dextrorotatory and levorotatory tartaric acid has a specific rotation of -6.35 degrees. What is the proportion of each compound in the mixture? O A. 25% of the dextrorotatory tartaric acid and 75% of the levorotatory tartaric acid O B. 33% of the dextrorotatory tartaric acid and 67% of the levorotatory tartaric acid OC. 50% of the dextrorotatory tartaric acid and 50% of the levorotatory tartaric acid O D.75% of the dextrorotatory tartaric acid and 25% of the levorotatory tartaric acidThe specific rotation of compound X is +10.2°. A mixture of compound X and its enantiomer are placed in the polarimeter and the observed rotation is +2.3°. Find the enantiomeric excess and determine which enantiomer is in excess (+ or -).An attempt at synthesizing a certain optically-active compound resulted in a mixture of its enantiomers. The mixture had an observed specific rotation of +16.0°. If it is known that the specific rotation of the R enantiomer is -33.3°, determine the percentage of each isomer in the mixture. R enantiomer: S enantiomer: % %
- 13. If the proton-pump inhibitor, (S)-omeprazole, has a specific rotation (rotation of plane polarized light) of -155°, what should the specific rotation of (R)-omeprazole be? a) -155° b) 0° c) +155° d) It can only be determined experimentallyA sample mixture containing the made-up enantiomers (R)-(+)-Nenamide and (S)-(-)-Nenamide has an apparent specific rotation of +6.50° at 25 °C. This sample has an enantiomeric excess (EE) of 43.0%. Provide answers to the following questions : 1.Which enantiomer is in excess in the sample? 2.What is the specific rotation of (S)-(-)-Nenamide?The specific rotation for (-)-methylphenidate is -38° mL g¹ dm¯1. Path length of the polarimeter is 1 dm. 1 You dissolve 0.5 g of a mixture of (-)-methylphenidate and its enantiomer in 4 mL of water. You place the sample into a polarimeter and the observed rotation is found to be -0.2°. What percent of the mixture is composed of (-)- methylphenidate? (Round your answer to the nearest whole percent.) The numerical values in this calculation will change with each attempt. Double check before submitting additional attempts. 17