The [α] of a pure enantiomer is -39°. The observed rotation of a sample containing both enantiomers was found to be -0.62°. a) Calculate the enantiomeric excess (e.e %) b) Calculate the percent of each enantiomer present.

The [α] of a pure enantiomer is -39°. The observed rotation of a sample containing both enantiomers was found to be -0.62°. a) Calculate the enantiomeric excess (e.e %) b) Calculate the percent of each enantiomer present.

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter92: Polarimetry

Section: Chapter Questions

Problem 3P

See similar textbooks

Related questions

Q: You synthesize lidocane following this reaction. Why did the experiment use a large amount of…

Q: Draw and upload here as an attachment (remember no heic files!) a Lewis structure that represents a…

A: Lewis structure of hydrochloric acid with partial charges

Q: What is the HNMR of the following product? cis-3,4-epoxy-1-hexanol ОН

A: 1H-NMR spectroscopy gives an information regarding the type and nature of the protons present in the…

Q: A mixture of 1.374 g of H₂ and 70.31 g of Br₂ is heated in a 2.00 L vessel at 700 K. These…

A: Answer: In this question by using stoichiometric correlation we have to convert the mass of H2 into…

Q: What is the angle between the carbon-oxygen bonds in the carbon dioxide (CO₂) molecule? 心。 X

A: Given, The angle between carbon oxygen bond in the CO2 molecule = ? Note: Steric number = number of…

Q: Provide two examples of thermoresponsive polymer and its applications in modern technologies

A: Thermoresponsive polymers are a class of materials that undergo a reversible change in their…

Q: Sort the following molecules by molecular geometry by dragging and dropping each symbolic…

A: There are different type of molecules with different geometries. Some of them are simple linear,…

Q: of Which of the following compounds has the most stable enol tautomer? a. O b. O d. ii OH

Q: 6.) Draw the mechanism for the following transformation. H₂SO4, H₂O Me Me HO LOH

A: Given that, a transformation reaction is shown below We have to draw the mechanism of the above…

Q: Above what Fe²+concentration will Fe(OH), precipitate from a buffer solution that has a pH of 9.76?…

A: Answer:- This question is answered by using the simple concept of calculation of concentration using…

Q: At a certain temperature, the equilibrium constant, ?, for the given reaction is 53.3.…

A: Given data is The equilibrium constant for the reaction H2(g) + I2(g) <====> 2HI(g) is 53.3…

Q: 43. Find the limiting reactant for each initial amount of reactants. MISSED THIS? Read Section 4.40;…

A: Dear student since you have posted multiple parts question, As per BARTLEBY QnA guidelines We are…

Q: table with the appropriate value for each involved species to determine the moles of reactant and…

Q: If H₂O reacts with H3O+, select the atom that is the electron source. Keyboard controls i Add…

A: In the given question, H2O react with H3O+ . We have to find atom which is electron source.

Q: Please help me with this Explain these reactions of alcohol (organic chemistry) 1. Substituition…

A: Alcohol is the organic functional group which contains the -OH group is known as hydroxy group. From…

Q: 3.13 Calculate the number of mEq in the following injection solutions: (a) 10 mL of 2.0% w/v sodium…

A: Number of milliequivalence (number of mEq) can be calculated from normality and volume. Number of…

Q: Consider the four substituents below. Order them in decreasing priority according to the…

Q: Draw and upload as an attachment the Lewis structure for nitric acid (HNO3). (Remember no heic…

A: The molecule given is nitric acid, a polar molecule.

Q: 3. Synthesis Design a synthetic route to perform the transformations shown below. You may use any…

A: Gilman reagent undergoes 1,4-addition to the α,β-unsaturated carbonyl compounds. Gilman reagent is…

Q: The oxidation of Mn2+ by oxygen proceeds according to the following 2Mn2+ + O2(aq) + 2H₂0 2 MnO2(s)…

A: Known: ∆GfoMn2+=-362.9 kJ/mol∆GfoO2aq=0 kJ/mol∆GfoH2O=-237.2 kJ/mol∆GfoMnO2=-465.1 kJ/mol∆GfoH+=0…

Q: Which of the following statements regarding complexometric titrations is incorrect O The higher the…

A: Complexometric titrations: It is a kind of Volumetric analysis , where formation of colored complex…

Q: Calculate the molar mass of sodium sulfite

Q: Which of the following can behave as Bronsted-Lowry bases in aqueous solution? Ca(OH)2 NaOH NH4+ I…

A: According to Bronsted and Lowry concept an Acid is a substance that has the tendency to donate a…

Q: mols Molarity of NaOH calculated from previous section 0.080m Unknown number or letter Final ml NaOH…

A: The question is based on the concepts of analytical chemistry. based on the data provided,we need to…

Q: 3. How many moles of H are there in 26.0 g of H₂0? How many molecules of CH4 are there in 25.5 g of…

A: Given , (4) Mass of water = 26.0 g

Q: C Initial rate data at a certain temperature is given in the table for the following reaction. 2…

Q: Ariange the following in order of increasing igal and oil å lad electronegativity foodWor antimony…

A: Electronegativity is a chemical property that describes the tendency of an atom or a functional…

Q: 1. NaBH(OAc)3 Br NH₂ 2. HCI, THE 3. TSCI, Et3N, DMAP

A: Given that, the reaction scheme is shown below We have to provide the structure of the…

Q: The addition of potassium bromide to water causes the vapor pressure to decrease the boiling point…

Q: 10. What volumes of 0.50 M HNO₂ and 0.50 M NaNO₂ must be mixed to p pH = 3.55?

A: 10 . Answer :---

Q: Predict the organic products for the reaction shown. d 1. excess CH31 2. Ag₂O 3. heat

A: The given series of reagents on tertiary amines produces alkenes.

Q: What are the special rules or laws to predict predominant products of alcohol and ether (organic…

A: There are some general reaction of common functional group in organic chemistry. They are frequently…

Q: When a particle of mass 9.1 × 10¯ g in a certain one-dimensional box goes from the n = :5 level to…

Q: Draw 4 isomers of C₆H₁₂ that have the (E)-configuration.

A: When the higher priority groups are on the same side of the double bond then the configuration is…

Q: Why are the chlorophylls less mobile than the carotenes on the TLC plate? Give a thorough…

A: The question is based on the concept of thin layer chromatography (TLC). we need to explain the…

Q: Complete the table below. Be sure each of your answer entries has the correct number of significant…

A: According Bronsted-Lowry acid and base theory, acids are substance which loses protons H+ to form…

Q: Calculate the pH of the solution after the addition of each of the given amounts of 0.0530 M HNO, to…

A: We have to calculate the pH of solution

Q: A Copper(I) ions in aqueous solution react with NH₂ (aq) according to Cut (aq) + 2NH, (aq) →→→…

Q: 2) How long does it take for 25g of Pr234 with a half life of 1.2 minutes to decay to 0.1mg of Pr234…

A: The degradation of the radioactive elements follow the first order kinetics. Using the rate…

Q: It takes 348. kJ/mol to break a carbon-carbon single bond. Calculate the maximum wavelength of light…

Q: ecide wnether these proposed Lewis structures are reasonable. proposed Lewis structure : 0: H = Br :…

A: • Lewis structure are those diagrams which represents the available valance electrons of atom in…

Q: Explain the observed reactivity rate of the following alkyl halides in an S№1 reaction. -CI slowest…

Q: Identify if each element is a halogen, alkali metal, inner transition metal, or a noble gas. (mto of…

A: Halogen ->The group 17 elements include fluorine (F), Chlorine (Cl), Bromine (Br) ,Iodine(I) and…

Q: Develop a retrosynthesis of the given target molecule, as shown below. In other words, what two…

A: The retrosynthetic analysis helps in designing the best synthetic route from simple and commercially…

Q: Question 5 E Listen What is the hydronium concentration at equilibrium of a weak acid whose…

A: Answer:- This question is answered by using the simple concept of ionisation of weak acid and then…

Q: A solution of a dye was analyzed by spectrophotometry, and the follow Absorbance (A) at 475 Dye…

A: Lambert Beer's law is given as: A=εCl where A is absorbance ε is molar absorptivity coefficient l is…

Q: 1.

A: “Since you have posted multiple questions, we will provide the solution only to the first question…

Q: In a functional assay, you find that your purified hCG sample has an activity of 20,000 mIU/ml…

A: The sample have to be 100 times less the original activity . Now first we have to calculate the…

Q: Using tables 22.3, 22.4, and 22.5, predict the shift for the protons attached to the atom indicated…

A: 1H-NMR used to identify the type and nature of the protons present in the compound. From the…

Q: Enter your answer in the provided box. Xenon hexafluoride was one of the first noble gas compounds…

A: Given that, XeF6 reacts with the SiO2 to form XeOF4 and SiF4. The reaction is shown XeF6 s + SiO2 s…

Question

The [α] of a pure enantiomer is -39°. The observed rotation of a sample containing both enantiomers was found to be -0.62°. a) Calculate the enantiomeric excess (e.e %) b) Calculate the percent of each enantiomer present.

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

What is the percent enantiomeric excess (ee) of a mixture that has 86% of one enantiomer and 14% of the other?
1. Which model/s has at least one plane of symmetry? 2. Which model/s are superimposable on their mirror image?
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?
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.
Please determine the enantiomeric excess of a mixture, 68% of one enantiomer and 32% of the other enantiomer Thank you
What is the pair of enantiomer for this structure? Draw in 3D representation
what is the chiral configuration at marked chiral centre? The left one is S and the right one is R but I don't understand how to decide it
A 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)
Hey could someone help me draw the enantiomer and diastereomer for these figures? I tried on the first one but I’m lost. Thank you!!
If a mixture of enantiomers has a specific rotation of -25 degrees when its pure enantiomers have a specific rotation of ± 30 degrees, what is the percent composition of the major enantiomer? Round to the nearest whole number. need answer fast i'll rate up
Part B. Mark each chirality center in each molecule with an asterisk (*). Illustrate onto the image Cannot be hand-drawn
Consider a solution made up of 90% R and 10% S. What is the enantiomeric excess (ee%) of the R enantiomer?