2. A 1.50 g sample of coniine, the toxic extract of poison hemlock, was dissolved in 10.0 mL of ethanol and placed in a sample cell with a 5.00 cm pathlength. The observed rotation at the sodium D line was +1.21°. Calculate [a]p for coniine.

Q: On each mass spectrum above, indicate the base peak and the molecular ion peak (or at least where…

A: To indicate base peak and molecular ion peak on both spectrums.

Q: 3. Assign the peaks in the 'H NMR spectra below based on their J-coupling patterns and peak…

A: In this question we have to assign the Peaks of given NMR spectrum.Let us study the protons present…

Q: 3.5 mg of optically-enriched (-) sugar P was dissolved in 1.00 mL methanol in a 1.00 mL volumetric…

A:

Q: (+)-menthol has a specific rotation of +50°. A mixture of (+)-menthol and (-)-menthol in a certain…

A:

Q: An aqueous solution containing 10 g of an optically pure compound was diluted to 500 mL with water…

A: The concentration of the compound in g/mL in pure solution is calculated as follows:

Q: A sample of 2-bromobutane has an enantiomeric excess (e.e.) of 45.0% favoring the I-enantiomer. What…

A:

Q: Designate the CIP priority order of the following C5H11- groups. (Lowest < Highest priority order)…

A:

Q: 6) Which compound would show major fragment ions at both m/z = 73 and m/z = 59? Bubble in your…

A: In the given question we are to tell which compound would show major fragment ions at both m/z = 73…

Q: What is the enantiomeric excess (% ee) of a sample of carvone which exhibits a specific rotation of…

A: Answer is as follows  The % ee = 90%  It have primarily S isomer   Hence , Answer are 90 and S…

Q: The treatment of (CH3)2C = CHCH2Br with H2O forms B (molecular formula C5H10O) as one of the…

A: The reaction of (CH3)2C=CHCH2Br with water is as follows, First step is formation of primary…

Q: A mixture of enantiomers is tested to be 76% ee (enantiomeric excess) with an observed rotation-10.…

A:

Q: Why ester C=O has higher stretching frequency than amide?

A: The functional present in any molecule is detected by IR spectroscopy. Interaction between the IR…

Q: TRANSMITTANCE 6. What functional groups are present in the following IR spectra TE INFRARED SPECTRUM…

A: Ir spectroscopy is used to identfy the functional group of a chemical compound

Q: Select the correct statement regarding the potential energy of AlIN and CazN2 O E, AIN > E, CazN2 :…

A: The correct option is: Ep of AIN &gt; Ep Ca3N2: Al3+ / N3- interactions are stronger than Ca2+ / N3-…

Q: A specific steroid has a Amax of 251 nm and a molar absorptivity e of 11, 500 L mol-¹ cm-¹. What is…

A:

Q: (True or False) Given that the UV A max for aspirin is 276 nm, if we measure the UV spectrum of a…

A: A question based on UV spectroscopy. A true or false question about λmax is given that is to be…

Q: Calculate  the specific rotation of each isomer  in a mixture  containing 10 mL (0.10M) of the S…

A:

Q: In his classic studies of stereochemistry and optical activity in organic compounds, Pasteur…

A: Given:α]D20 = +12.4o  α = 0o

Q: 2. Answer the questions based on the following figure. m/z = 73 m/z = 138 m/z = 66 m/z = 121 a. Draw…

A: In mass spectrometry, the m/z value is very important. It is used to detect the molecular…

Q: Which of the following has/have the E-configuration? 1 2 A. 1 only В. 2 only C. Both 1 and 2 D.…

A: E–Z configuration is the method of describing the absolute stereochemistry of double bonds.

Q: CO= 15 0%=

A: 1-H NMR determination: This is the structure of benzil. In benzil 3 types of protons, (Ha, Hb, Hc)…

Q: Give a single benefit for each polymerisation from carrying them out under a nitrogen atmosphere?…

A: Introduction: The polydispersity index (PDI) is dependent on the two parameters, i.e (I) number…

Q: Identify the Kc expression for the following reaction: Zn+2 (aq)   +   4 NH3 (aq)   ⇋⇋   Zn(NH3)4+2…

A:

Q: The student was asked to use a polarimeter, which measures the angle of rotation of plane-polarized…

A: An object is said to be chiral if the object and its mirror image cannot overlap, just like our…

Q: What are the fundamental differences between a good solvent and a theta solvent, and how do they…

A: Good solvent And theta Solvent  differs in interaction   in polymer  chains

Q: Absorbance Transsmission 0.730 17.8 0.641 22.8 0.400 31.8 0.340 45.2 0.211 62.0 0.076 85.4 0.020…

A: Given:

Q: A student completed a similar lab experiment and got an εavg of 56 M-1cm-1. If their change in…

A: Rate of a reaction is ratio of change in concentration with change in time. Here we found rate of…

Q: absorption

A: Stretching frequency (v) = 1/2π  force constant /…

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: 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: You did not wipe their fingerprints from the sides of the cuvette before making the absorbance…

A: If we do not wipe the fingerprint from the sides of the cuvette before making the absorbance…

Q: -N-C- 2.) H20

A:

Q: What is the structure based on the HNMR?

A: Nuclear Magnetic Resonance (NMR) spectroscopy is an analytical chemistry technique used to deduce…

Q: What major IR absorptions are present above 1500 cm−1 for attached compound ?

A: The interaction of matter and electromagnetic waves is called spectroscopy. When this…

Q: Please list the appropriate peaks in the NMR spectra results with a short narrative. Thank you.

A: The multiplicity in NMR spectroscopy depends upon the number of nearest neighbouring protons by n+1…

Q: Which of the following scaffolds would make a basis for a compound library for screening? Why?

A: GIven:  Which of the following scaffolds would make a basis for a compound library for screening?…

Q: (-)-Cholesterol has a specific rotation of -32o. A mixture of (+)- and (-)-cholesterol was analyzed…

A: The sign of rotation is +, means S enantiomer is present in excess.  That is rotation for R(-) is is…

Q: (COCI)2 DMF OH Hexane (CH;CH,),NH CI Hexane

A: Oxalyl chloride is also used for conversion of carboxylic acid to acid chloride.

Q: A sample of 0.8281 g of phenylsuccinic acid was dissolved in 10 mL of acetone. This sample gave a…

A: Sulphanilic acid is insoluble in both water as well as in acid because it can not form hydrogen…

Q: (-)-Cholesterol has a specific rotation of -32o. A mixture of (+)- and (-)-cholesterol was analyzed…

A: Given data,Specific rotation=-32oObserved rotation=14o

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

A: Given, mass of menthol is 1.02 g which is dissolved in 10 ml of absolute ethanol  Optical path…

Q: 1) Consider the following compound: (4E,2R)-6,6-dimethylhept-4-en-2-ol. Draw the molecule below and…

A: In the question, name of a compound is given and its structure is asked to draw. Also, the mechanism…

Stereochemistry and Isomerism

Stereochemistry deals with the three-dimensional structure and properties of molecules. It explains the arrangement of atoms and their manipulation within a molecule in a 3D structure. Stereochemistry can be dealt with all types of molecules. Based on the stereochemistry of a molecule, the physical and chemical properties of the molecules vary.