The optical rotation of a sample was found to be 0.24° when the concentration was 0.60 g in 10 mL of chloroform and the path length of the cell in the polarimeter was 5 cm. What is the specific rotation for this sample?

The optical rotation of a sample was found to be 0.24° when the concentration was 0.60 g in 10 mL of chloroform and the path length of the cell in the polarimeter was 5 cm. What is the specific rotation for this sample?

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter3: Stereoisomerism And Chirality

Section3.7: Optical Activity—how Chirality Is Detected In The Laboratory

Problem 3.9P

See similar textbooks

Related questions

Q: 1. Dr. VMV weighed out 1.02 g of menthol and dissolved it into 10.0 mL of absolute ethanol in a 10.0…

A: Specific rotation

Q: How can you tell whether a complexion is optically active?

A: The activity of a complex can be found out by observing the structure of the complex and also…

Q: Ex: A0.66 gram sample of L-(-)-menthof was dissolved in 13.3 mL of ethanol. The sample was then…

Q: A solution of an unknown compound (3.0 g of the compound in 200 mL of solution), when placed in a…

A: Specific Rotation of the compound is calculated as follows: Since direction of polarized light is…

Q: Calculate the observed rotation a of D-erythrose at 25°C that would be observed in the polarimeter…

A: Specific rotation is a property of chiral or optically active compound and it is numerically equal…

Q: When free in solution (i.e., not bound to opsin), both all-trans and 11-cis retinal have absorption…

A: The geometry of the molecule may be changed by the exposure of light, that is, compound can be…

Q: A 0.300 g tablet of levetiracetam is dissolved in 7.50 mL of acetone and placed in a sample cell…

A: Given: The specific rotation of levetiracetam, [α]=-93.4 Mass of tablet=0.300 g Volume=7.50 mL…

Q: If a substance is known to have a specific rotation of +20.0 deg mL/g dm, what is the concentration…

A: Data given: Specific rotation of a substance, [α] = + 20.0 deg mL/g dm Observed rotation, αobserved…

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

A: Given, The observed rotation is +10° Length of the tube is 1 dm Concentration of the sample is 1.0…

Q: For the Renantiomer of the molecule, the specific optical rotation is: [a]=+92°g1.cm3.dm 1 A…

Q: A 23.9061 g of Ethambutol hydrochloride was diluted with 100 mL of water and was analyzed in a 1.0…

A: The question is about ethambutol hydrochloride, a drug.

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

Q: The (R) enantiomer of a pure compound has optical rotation [a], 25 = 60.0⁰. If a sample is 66.6% R…

A: The R enantiomer of a pure compound has optical rotation of 60.0° . A sample is 66.6 % R and 33.3…

Q: The UV-vis absorption spectrum of the peptide RYYFE collected in a 1 cm pathlength cuvette exhibits…

A: the optical path length and the molar concentration of the solution. i.e.…

Q: Calculate the specific rotation of a substance that is dissolved in a solvent (0.4 g/mL) and that…

A: We will calculate the specific rotation of a substance that is dissolved in a solvent ( 0,4 g/mL)…

Q: What is the concentration of an unknown sample if its optical rotation is +28.50 deg mL/dm g. Its…

Q: A solution of (S)-valine (molar mass = 117.15) is observed to have a rotation of +16.2 degrees in a…

A: Molar Specific rotation is the rotation caused by a sample at a concentration of 1 mol/L in a sample…

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: What is in a fractionating column? Silica gel Collected fractions Glass or plastic…

A: Using fundamental of fraction distillation process and hardware.

Q: The absorbance (A) of a solution is related to its concentration (C) according to the Beer-Lambert…

A: Lambert Beer's law gives the relation of concentration with respect to absorbance as; A=εC where A…

Q: What could be the observe rotation of a 0.87 M solution composed of a sample which has a MW of…

Q: What could be the observe rotation of a 0.86 M solution composed of a sample which has a MW of…

Q: Why is it necessary to resolve chiral pharmaceuticals (why cant we just use racemic versions)? What…

A: The separation of two enantiomers is called a resolution.

Q: The observed rotation of 2.0 g of a compound in 50 mL of solution in a polarimeter tube 20 cm long…

A: Specific rotation is a property of a chiral compound. It is defined as change in orientation per…

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

A: The substances that rotate the plane of polarized light towards left are said to be laevorotatory…

Q: A solution of 2.0 g of (+)-glyceraldehyde, HOCH2CHOHCHO, in 10.0 mL of water was placed in a 100-mm…

A: Given : Observed rotation = +1.74° Length of the tube = 100 mm = 10 cm = 1 dm…

Q: -A1.50g sample of conine sample was dissolved in 10.0 ml of ethanol and placed in a sample cell with…

Q: In 250 ml ethanol solution, a tablet of saccharin was dissolved, and it was measured by UV…

A: Beer's law states that the absorbance is directly proportional to the concentration of the absorbing…

Q: Calculate the specific rotations of the following samples taken at 25 °C using the sodium D…

A: The specific rotation 'α' of an optically active substance at a particular temperature and for a…

Q: An aqueous solution containing 9.01 g of an optically-pure compound was diluted to 6.00 × 104 mL…

A: The specific rotation of a compound is expressed as α/Cl where α is the observed angle in degrees, C…

Q: A unknown sample gave a specific rotation of 0 when placed in a polarimeter. What conclusion(s) can…

A: In organic chemistry the Specific rotation means it is the property of a chiral chemical compound.

Q: What is the check digit for the Flamin’ Hot Cheetos with the following UPC: 0 28400 58989

A: A check digit is a form of redundancy check used for error detection on identification numbers,…

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

Q: A solution containing 5.0g of compound dissolved in 1000mL of solvent generated an observed rotation…

A: Given data,Observed rotation=27oLength of tube=250mmMass of solute=5.0gVolume of solvent=1000mL

Q: 5. Can you predict all chromophores from the following UV-Vis spectra 3 200 -Sixth hour (b) 2.5…

A: Chromophore refers to a sepcific group present in a compound that absorbs light and is responsible…

Q: Why do polar solvents obliterate the fine spectral structures in an absorption band?

A: Polar solvents obliterate the fine spectral structures in an absorption band.

Q: A 3.5 cm perimeter tube was used in the test of an unknown sugar with the observed rotation of…

A: We have been given the observed optical rotation of sample and the specific rotation and the path…

Q: Calculate the specific rotations of the following samples taken at 25 °C using the sodium D line.…

A: (b) Since the rotation is clockwise. The sample must be dextrorotatory or (+). The concentration is…

Q: An aqueous solution containing 7.037.03 g of an optically-pure compound was diluted to…

Q: If a solution of a compound (50.0 g/t00 ml of solution) has a measured rotation of 150 in a 2 dm…

A: Answer: Option a ----> +15

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: Find the optical purity of a sample that has an observed rotation of +4.5o and a specific rotation…

A: In this question, we will determine the optical purity ( also called percentage of enantiomeric…

Q: A researcher isolated 10 g of a Natural Product from a local plant. In an attempt to determine the…

A: 1) Polarimeter used by researcher to obtain the reading. A polarimeter is used to measure the…

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,

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…

Question

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 with 2 images

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

Calculate the specific rotation of a solution of a compound (30.0 g/100 mL of solution) that has a measured rotation of +25.25º in a 2.00 dm tube.
The observed rotation of 2.0 g of a compound in 50 mL of solution in a polarimeter tube 20 cm long is +138°. What is the specific rotation of the compound?
Calculate the optical rotation of an unknown sample with actual rotation of -43.67 deg. Using a 45-cm polarimeter tube and the concentration of the solution is 2.38 g/mL. Show the solution and express the answer to 3 significant figures.
Calculate the specific rotations of the following samples taken at 25 °C using the sodium D line.1.00 g of sample is dissolved in 20.0 mL of ethanol. Then 5.00 mL of this solution is placed in a 20.0-cm polarimeter tube. The observed rotation is 1.25° counterclockwise.
Calculate the observed rotation for a solution of a substance (2.0 g/mL) that is 80% optically pure. A 2-dm cell is used. The specific rotation for the optically pure substance is 120°.
the observed rotation, α, of a 59.9 mg mL-1 solution of an optically-active substance in a 20 cm path length polarimeter was +3.7°. Calculate the value of the specific rotation, [α], in degrees to one decimal place.
A solution of an unknown compound (3.0 g of the compound in 200 mL of solution), when placed in a polarimeter tube 2.0 dm long, was found to rotate the plane of polarized light 18° in a counterclockwise direction. What is the specific rotation of the compound?
A 3.5 cm perimeter tube was used in the test of an unknown sugar with the observed rotation of -4.20. The optical rotation of the solution is -26.740 mL/dm g. Find the density of the sugar solution.
A solution of 0.50 g of (-)@epinephrine dissolved in 10.0 mL of diluteaqueous HCl was placed in a 20-cm polarimeter tube. Using the sodium D line, the rotation was found to be -5.1° at 25 °C. Determine the specific rotation of epinephrine.
A new chemical reaction produced a mixture of two enantiomers. When 9.0 g of this mixture was dissolved in 50.0 mL of CH2Cl2 in a sample cell 20 cm long, the optical rotation was found to be +18.0º. The known specific optical rotation of one of the enantiomers is –74.0. What was the percentage of the (+) and (–) enantiomers produced by the reaction
An aqueous solution containing 7.57 g of an optically-pure compound was diluted to 2.00×102 mL with water and placed in a 10.0 cm long polarimeter tube. The measured rotation was −4.11° at 25° C. Calculate the specific rotation of the compound.
A solution is prepared by dissolving 678 mg of testosterone in 20 mL of ethanol. The sample was placed in a 10 cm long cuvette. The observed rotation of the sample at 25oC is + 13.8o. Calculate the specific turnover of testosterone, show the calculations.