The (-) enantiomer of a compound has a specific rotation of [a] = 123°. What rotation, a, will be observed for a sample of this pure enantiomer at concentration of 0.25 g/mL, when measured in a polarimeter in a 2 dm sample tube? %3D

The (-) enantiomer of a compound has a specific rotation of [a] = 123°. What rotation, a, will be observed for a sample of this pure enantiomer at concentration of 0.25 g/mL, when measured in a polarimeter in a 2 dm sample tube? %3D

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter92: Polarimetry

Section: Chapter Questions

Problem 2P

See similar textbooks

Related questions

Q: COOH HI CH3 HOH,C

A: According to Cahn-Ingold-Prelog rule- 1) More atomic number having more priority.2) If first atom is…

Q: of oene boloogo orh sisluols 0.C1+ 1o nouston oftiooqe s ei bioe onerT-( bios onchst-(-)82 bios…

Q: How would I go about listing the groups from highest priority to lowest priority, and then…

A: Rules: Chrial center is having four groups. You have to give priority according to according to…

Q: If a solution of a compound (50.0 g/100 mL of solution) has a measured rotation of +150 in a 2 dm…

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: 2. A 1.50 g sample of coniine, the toxic extract of poison hemlock, was dissolved in 10.0 mL of…

Q: Consider a solution that contains 74.0% R isomer and 26.0% S isomer. If the observed specific…

Q: Q 4(a) What is [a]o for a 1M solution of 2-chloropentane if the optical rotation, a, is +3.6 using a…

A: Given: The optical rotation, α = +3.6° Path length, l = 2 dm The solution's conc., c = 1 mol/L Also,…

Q: The specific rotation for a pure enantiomer is known to be-45 g mL-1 dm-1. A sample containing both…

A: For this sample, specific rotation [a] [a] = observed rotationconcentration ×length[a] =…

Q: Calculate the specific rotation of a pure sample of a secondary alcohol that gave an observed…

Q: НООС H. H l'Br СООН Br

A: Stereogenic center refers to the carbon whose groups if exchanged in position result in a different…

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: d) CN Br h)

A: -> Every chiral center has a certain configuration either R or S . -> R and S represent two…

Q: 5. A solution containing 2.0g of compound dissolved in 50mL of solvent generated an observed…

A: Specific rotation is a property of chiral compound. Chiral compound rotate plane polarised light in…

Q: 21. A solution containing 2.0g of compound dissolved in 50mL of solvent ģenerated an observed…

A: Specific rotation of the compound is equal to the observed rotation when the length of tube is taken…

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: A sample of pure (S)-2-butanol was placed in a polarimeter tube with a 20 cm path length. Using the…

A: Given that the length of polartimeter tube = 20 cm = 2 dm (1 dm = 10 cm) observed optical rotation…

Q: (c) If the specific rotation of an enantiomeric mixture is +12.5° and that of the pure enantiomer is…

A: Given that, Specific rotation of an enantiomeric mixture = +12.5° Specific rotation of pure…

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: 6. When one of the enantiomers of 2-hexanol is placed in a polarimeter, a rotation of 8,100 is…

A: The optical rotation of a chiral substance usually is reported as a specific rotation αα is the…

Q: A sample of synthesized sucrose from organic chemistry lab was tested, and the specific rotation of…

Q: A certain compound has a specific rotation of -43.2o (c = 5, toluene). What is the observed rotation…

A: Given: Mass of the sample, m = 1.24 g Concentration of the sample, C = 1.00 g/mL…

Q: Dextromethorphan has a specific rotation of +142°. If an optically impure sample of dextromethorphan…

Q: How can you decide whether an observed rotation of a solution of an optically active compound is…

A: Optically active compound: Some chemical compounds have the capability to rotate the plane-polarized…

Q: Q18) Enantiomeric purity of a sample should be confirmed. The polarimetry study gave the result of…

A: Since the polarity measurement result is more nearer to the isomer with -ve specific rotation Hence…

Q: When 0.300 g of sucrose is dissolved in water to a total volume of 10.0 mL and placed in a sample…

Q: A 0.26 M solution of an enantiomerically pure chiral compound D has an observed rotation of +0.197°…

Q: Considering the observed rotation value indicated in the table, and considering that the measurement…

Q: When one of the enantiomers of butan-2-ol is placed in a polarimeter, the observed rotation is 4.05°…

A: Given, The mass of butan-2-ol is 6.0g. The volume of butan-2-ol is 40.0mL. The length of the…

Q: A 0.100 M solution of an enantiomerically pure chiral compound D has an observed rotation of +0.22…

A: Since you have asked multiple questions we will some the first one for you, if you want answer to a…

Q: The specific rotation for (-)-methylphenidate is -38° mL g¹ dm¹. Path length of the polarimeter is 1…

A: Given , Specific rotation of (−)-methylphenidate = - 38°mLg dm path length of polarimeter = 1 dm

Q: Enantiomers can be distinguished using mass spectroscopy because they have different fragmentation…

A: Mass spectrometry uses ionisation method to form fragments of a compound and then give peaks…

Q: 3. A solution of enantiomers has an observed specific rotation of +8.0°ml/g dm and pure (+)…

Q: If a solution of a compound (50.0 g/100 mL of solution) has a measured rotation of +150 in a 2 dm…

Q: For sucrose, C12H22011, [a]B = +66.5 deg. (a) Calculate the molecular rotation of sucrose. (b)…

A: #(b): Given the specific rotation, αD20 = + 66.5 degree path length, l = 10 cm Concentration, C =…

Q: If a pure R isomer has a specific rotation of –126.0°, and a sample contains 70.0% of the R isomer…

Q: 2. The observed rotation of a compound, X (14.0g dissolved in water to make 100ml. of solution) in a…

A: Given: To find: The specific rotation of X

Q: A 1.62 M solution of (R)-2-butanol is mixed with an equal volume of a 0.810 M solution of racemic…

A: A numerical problem based on concentration terms, which is to be accomplished.

Q: но chiral H3cơ centers

A: A question about absolute configuration, which is to be accomplished.

Q: Find the specific optical rotation of (S)-malic acid having an observed rotation of 5.5 g/ ml in a…

A: specific rotation ([α]) is a property of a chiral chemical compound. It is defined as the change in…

Q: A 1.52 M solution of (R)-2-butanol is mixed with an equal volume of a 0.760 M solution of racemic…

Q: If we mix 20cm^3 sucrose of 250g/dm^3 mass concetration with 20cm^3 water, what will be the light…

A: Degree of light rotation can be calculated using the specific rotation and concentration.

Q: What is the enantiomeric excess of a solution with a specific rotation of - 90 degree where the pure…

Q: With your models, construct a pair of enantiomers. From each of the models, remove the same common…

Q: pure (S) enantiomer has a specific rotation of -63deg, what is the specific rotation of the mixture…

A: chirality

Q: A 1.50 g sample of coniine, the toxic extract of poison hemlock, was dissolved in 10.0 mL of ethanol…

Q: 3. Are the following molecules chiral or achiral? What features lead you to this conclusion?…

A: Chiral molecules: Molecules which are non-superimposible mirror images of each other Chiral…

Q: (R)-2-methylbutan -1- ol (structure shown on the right )is an optically active compound that has a…

A: Here the specific rotation of (R)-2-methylbutan-1-ol is +5.75° at 20°C. We have to determine…

Q: A chemist working on the synthesis of (+) plocarpine, an akaloid used n the treatment of dry mouth…

Q: A natural product was isolated in the laboratory, and its observed rotation was +10° when measured…

A: The specific rotation of natural product is calculated as,

Question

Hello! Please help me solve/ understand these problems! Thank you so much!

The (-) enantiomer of a compound has a specific rotation of [a] = 123°. What rotation, a,
will be observed for a sample of this pure enantiomer at concentration of 0.25 g/mL,
when measured in a polarimeter in a 2 dm sample tube?
%3D

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

An aqueous solution containing 10 g of an optically pure compound was diluted to 500 mL with water and was found to have a specific rotation of −121º. If this solution were mixed with 500 mL of a solution containing 3 g of a racemic mixture of the compound, what would the specific rotation of the resulting mixture of the compound? What would be its optical purity?
Find the optical purity of a sample that has an observed rotation of +4.5o and a specific rotation of +66o.
the stereocenter labelled in blue has an a. R absolute configuration b. S absolute configuration
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?
A 0.26 M solution of an enantiomerically pure chiral compound D has an observed rotation of +0.197° in a 1‑dm sample container. The molar mass of the compound is 132.3 g/mol. a. What is the specific rotation of D? b. What is the observed rotation if this solution is mixed with an equal volume of a solution that is 0.26 M in L, the enantiomer of D? c. What is the observed rotation if the solution of D is diluted with an equal volume of solvent?
a. The specific rotation for pure R is +5.0, what percentage of the mixture is R when the observed roation is -2.0. b. The rotation for pure S=-100. What is the observed rotation of a mixture that is 20%S and 80%R? I need an easy way to solve these kinds of problem, please!!
Bartleem is a chiral molecule. At 70 oC Bartleem is a liquid with a density of 0.722 g/mL. At this temperature and using a 589 nm light source with a 1 dm path length the rotation of light is found to be 71o. What is the optical rotation for Bartleem?
When one of the enantiomers of butan-2-ol is placed in a polarimeter, the observed rotation is 4.05° counterclockwise. The solution was made by diluting 6.00 g of butan-2-ol to a total of 40.0 mL, and the solution was placed into a 200-mm polarimeter tube for the measurement. Determine the specific rotation for this enantiomer of butan-2-ol.
What is configuration (R or S) for the centers and the enantiomer for the whole isomer? Also tell if they are Z or E.
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?
If a substance is known to have a specific rotation of -89.3 deg mL/g dm, what is the concentration (in g/mL) of a solution that would give an observed rotation of -25.5 degrees, if the path length of the sample tube was 2.00 dm? (Hint: Rearrange the specific rotation calculation formula)
What is different for enantiomers? a)The rate at which they react with a chiral column b) the TLC Rf value