The (+) enantiomer of Aromatisse has a specific rotation of +21.5. What is the percent of the (-) enantiomer in a mixture, if the specific rotation of the mixture is -15.05?
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: The specific rotation of vitamin B7 in water at (22 °C) is +92. A Chemist prepared a mixture of…
A: The observed specific rotation of an enantiomeric mixture is related to the ee as, =>% ee =…
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…
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A: Specific rotation is a property of chiral or optically active compound and it is numerically equal…
Q: What stereocenters (using R /Or S) are in anatoxin-a and anatoxin-a (S)?
A: Stereocenter: An atom with four different group attached that are unique from each other such that…
Q: An unknown sugar at a concentration of 0.018 g/mL was found to have an observed rotation of 1.50 in…
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Q: Consider a solution that contains 74.0% R isomer and 26.0% S isomer. If the observed specific…
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Q: composition
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Q: 0.5 g of optically-enriched (-)-mandelic acid was dissolved in 10 mL of absolute ethanol. Using a 1…
A: The explanation is given below-
Q: Pure MSG, a common flavor enhancer, exhibits a specific rotation of +24. (a)Calculate the ee of a…
A: (a) Since the [α] of pure enantiomer is = + 24 And [α] of mixture is given as + 10 since ee =…
Q: A sample of (S)-(+)-lactic acid was found to have an enantiomeric excess of 72%. How much R isomer…
A: The enantiomeric excess of sample of (S)-(+)-lactic acid is 72%, that means 72% is (S)-isomer and 28…
Q: Consider a solution that contains 69.0% R isomer and 31.0% S isomer. If the observed specific…
A: The solution contains 69.0% of R isomer and 31.0 % of S isomer. Here R isomer is in excess than S…
Q: What is the percentage of the R enantiomer in a sample of limonene that has a specific rotation of…
A: Specific rotation is the angle of rotation in degrees of the plane-polarized light that passes…
Q: 4. A sample of the amino acid cystine has a specific rotation of -68°. Pure (-)-cystine has a…
A: we need to calculate the mole percentages of both enantiomers in the sample
Q: Pure MSG, a common flavor enhancer, exhibits a specific rotation of +24. (a) Calculate the ee of a…
A: a. The value of specific rotation of pure enantiomer (MSG) is +24.The value of [a] mixture is…
Q: to uoitetor orlioogadirw 3. The specific rotation of pure (-) cholesterol is -39° g' mLl dm!. What…
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Q: Perform a stereochemical analysis of the final hydrobenzoin product, indicating which pairs are…
A: Enantiomers are the stereoisomers which are non-superimposible mirror images of each other…
Q: Determine the specific rotation of a pure compound that has an observed specific rotation of (+)…
A: We have to calculate the specific rotation.
Q: The specific rotation of α-d-galactose is 150.7 and that of β-d-galactose is 52.8. When an aqueous…
A: When monochromatic light is passed through a solution of the chiral compound, the light is reflected…
Q: Consider a solution that contains 84.0% R isomer and 16.0% S isomer. If the observed specific…
A: Given, A solution contain 84.0% R isomer and 16.0% S isomer. The observed specific rotation is -37.…
Q: Pure MSG, a common flavor enhancer, exhibits a specific rotation of +24. (a) Calculate the ee of a…
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Q: The specific rotation of optically pure (R,R)-tartaric acid is +12.4. If a mixture of (R,R)- and…
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Q: The specific rotation of (S)-Carvone is +61° while the specifiC rotation of (R)-Carvone is -61°. If…
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Q: The specific rotation of L-dopa in water (at 15°C) is -39.5. A chemist prepared a mixture of L-dopa…
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Q: What is the maximum number of stereoisomers for mannuronic acid?
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Q: Why is there no meso stereoisomer in sodium ammonium tartarate
A: Applying concept of stereochemistry.
Q: Consider a solution that contains 66.7 % of the R isomer (specific rotation = -46 °) and 33.3% of…
A: The specific rotation of the R-isomer is = -46 degree The enantiomeric excess of the R-isomer is =…
Q: Why is it necessary to resolve Chiral pharmaceuticals why can't we just use racemic versions in the…
A: The separation of the components of a racemic mixture is called chiral resolution. It is helpful for…
Q: What% of the enantiomer (R) contains a mixture with an 80% enantiomeric excess in the enantiomer S)?…
A: For a given mixture containing both (R) and (S) isomers: Enantiomeric Excess = %(R)~%(S) Also,…
Q: Like glucose, galactose mutarotates when it dissolves in water. The specific rotation…
A: The term mutarotation may be defined as the specific rotation change discovered in the chiral…
Q: 2. 0.5 g of optically-enriched (-)-mandelic acid was dissolved in 10 mL of absolute ethanol. Using a…
A: Specific rotation formula,
Q: The specific rotation of vitamin B7 in water (at 22°C) is +92. A chemist prepared a mixture of…
A: We have given that specific rotation (α) of pure Vitamin B7 = + 92 And Observed specific rotation…
Q: The (-) enantiomer of a compound has a specific rotation of [a] = 123°. What rotation, a, will be…
A: Since you have posted multiple questions, we are entitled to answer the first only.
Q: Q2:-: Define the following terms? Give example a- dextrorotatory b- meso compound C- specific…
A: Q2: a-Dextrorotatory: The ability of an optically active compound to rotate the plane polarized…
Q: Pure MSG, a common flavor enhancer, exhibits a specific rotation of +24. (a) Calculate the ee of a…
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Q: The observed rotation for 100 mL of an aqueous solution containing 50.00 g of sucrose, placed in a…
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Q: Q2:- : Define the following terms? Give example a- dextrorotatory b-meso compound C- specific…
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Q: The specific rotation of vitamin B7 in water (at 22°C) is +92. A chemist prepared a mixture of…
A: Each enantiomer has its own optical rotation. Thus the enantiomer having more optical rotation will…
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: 3. (+)-Tartaric acid has a specific rotation of +12.0°. Calculate the specific rotation of a mixture…
A: Given: Specific rotation of tartaric acid is +12.0o. % of (+)-tartaric acid = 68 %. And % of…
Q: Which of the following is true for structure II? L-ketose D-ketose D-aldose L-aldose
A: The name of the structure depends on the the functional group present in the structure . The prefix…
Q: The specific rotation of a-D-galactose is 150.7 and that of B-D-galactose is 52.8. When an aqueous…
A: The specific rotation of α-D-galactose is 150.7˚ and the specific rotation of β-D-galactose is…
Q: What will be the optical rotation of a mixture of equal portions of (+)-MTPA and its enantiomer?
A: Racemic mixture A mixture of equal proportions of two enantiomers, or substances with dissymmetric…
Q: 1. The specific rotation of (S)-1-amino-1-phenylethane is-30.0 deg mlg dm, la, =-30.0 deg ml. gdm…
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Q: Pure cholesterol has a specific rotation of −32. A sample of cholesterolprepared in the lab had a…
A: Enantiomeric excess is the excess of one enantiomer over the other in a mixture of enantiomers.
Q: Q2:- : Define the following terms? Give example a- dextrorotatory b- meso compound C- specific…
A: Note: Since we solve one question at a time, we’ll answer the first question as the exact one wasn’t…
Q: Calculate the specific rotation of (2R,3R)-tartaric acid based on the following observation: A 0.856…
A: Given: Mass of pure acid, m = 0.856 g Volume of water, V = 10.0 mL…
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- determine the sterocenters and R/S(R)- Lactic acid rotates the plane of polarized light 3.330 counterclockwise while (S)-lactic acid rotates the light to the same intensity clockwise. What angle the plane of polarized light is rotated by a 50:50 racemic mixture of the two enantiomers? Question 24 options: 00 3.330 Can’t be predicted 6.660 1.110Answer the following A)No.of chiral centers? B)No of stereoisomers? C)what is the absolute configuration of C2?
- What% of the enantiomer (R) contains a mixture with an 80% enantiomeric excess in the enantiomer S)? Explain your answer.(a) Which of the structures are chiral as drawn? (Select all that apply.) structure (a)structure (b)structure (c)structure (d)structure (e)structure (f) (b) When placed in a solution at 298K, which structure(s) will show an optical rotation? (Select all that apply.) structure (a)structure (b)structure (c)structure (d)structure (e)structure (f)A mixture of the stereoisomers of glutamic acid has an observed rotation of +6°. The specific rotation of pure (R)-(–)-glutamic acid is –24°. Calculate (a) the enantiomeric excess, (b) the composition of the mixture, and (c) draw the 3D structure of the excess glutamic acid.
- A 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?(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°.Like glucose, galactose mutarotates when it dissolves in water. The specific rotation ofa-d-galactopyranose is +150.7°, and that of the b anomer is +52.8°. When either ofthe pure anomers dissolves in water, the specific rotation gradually changes to +80.2°.Determine the percentages of the two anomers present at equilibrium.
- Different Ways of Drawing an Enantiomer Locate the stereogenic center in the amino acid alanine, and draw the enantiomer using the two methods shown in Figure 5.5.Understanding monosaccharides (2-part problem) a) Draw both anomers of the 4C1 and 1C4 chairs of D-mannapyranose. Rank them from least stable to most stable, justifying your choice. b) Draw the acid-catalysed mechanism whereby D-fructose cyclizes to α-D-fructofuranoseThe specific rotation of (-) isomer is -22˚, with concentration of 4.2 g/100 mL, and pathlength of 0.5 dm. The specific rotation of (+) isomer is +17.4˚, with concentration of 4.0 g/100 mL, and pathlength of 0.5 dm. 1. Calculate the observed rotation of the (+) and (-) methylbenzylamine isomers, and explain that the polarimeter calculates the specific rotation 2. calculate %ee (enantiomeric excess) (allows for further discussion; attention to be paid to the accepted optical rotation to ensure that it is in the same particular solvent system)