If a solution of a compound (50.0 g/100 mL of solution) has a measured rotation of +150 in a 2 dm tube, the specific rotation is: +15 O +20 O +35 +8
Q: Complete the calcu lations to find the focus NIVI= N2UZ 0,15 -3,45=N2-2,8
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Q: What is the specific rotation 20[a ]D of the following molecule? * a = 4.42° C= 0.1g.mr" | = 10cm O…
A: We know that, Observed angle of rotation = specific rotation x concentration in g/ml x length…
Q: A 23.9061 g of Ethambutol hydrochloride was diluted with 100 mL of water and was analyzed in a 1.0…
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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: Aciortence 2. Use the absorbance-concentration graph given below to find the value of absorptivity…
A: Lambert-Beer Law is utilized to measure the concentration of a sample in a solution using absorbance…
Q: 5. n5º of 2-chloro-2-methylpropane is 1.3850. If a 1g sample of 2-chloro-2-methylpropane was…
A: The explanation is given below-
Q: If a solution of a compound (50.0 g/100 mL of solution) has a measured rotation of +150 in a 2 dm…
A:
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: 2. A 1.50 g sample of coniine, the toxic extract of poison hemlock, was dissolved in 10.0 mL of…
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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: Identify the two geometric isomers of stilbene, C6H5CH=CHC6H5 from their λmax values, 294 nm and 278…
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Q: For the Renantiomer of the molecule, the specific optical rotation is: [a]=+92°g1.cm3.dm 1 A…
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Q: Calculate the observed rotation for a solution of a substance (2.0 g/mL) that is 80% optically pure.…
A: To calculate the observed rotation for a solution
Q: A new chemical reaction produced a mixture of two enantiomers. When 9.0 g of this mixture was…
A: The percentage of (+) and (-) enantiomers produced in the reaction is to be found out. For this the…
Q: 6. KCo[Fe(CN)6] has an unusually low-energy charge transfer band at 550 nm. When this compound is…
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Q: A solution o 150.0 mL of solvent. A portion of the solution was placed in a tube that is 1.00 dm…
A: The compound that contains a chiral carbon show optical rotation. The optical rotation is measured…
Q: What is the concentration of an unknown sample if its optical rotation is +28.50 deg mL/dm g. Its…
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Q: Q3) (- A solution of 2.0 g of (+)-glyceraldehyde in 10.0 mL of water was placed in a 10.0 cm…
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Q: 1. For polyphosphazene shown below, it has the number of repeat units N= 7500 and length / =1.53 Å.…
A: Given, Number of repeat units, N = 7500 length, l = 1.53 Å
Q: Choose the compound with the broadest IR signal between 3600 cm² and 3000 cm1 OH OH OH HO A D
A: IR mainly expalines the main functional groups that are present in the molecule
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: A 6.17 x 10- M sample of compound X in a solvent has an absorbance of 0.300 at 528 nm in a 1.000 cm…
A: Answer: This question is based on Beer-Lambert law which is shown below: A=εbC Here:…
Q: uestion 31 Estriol, a potent estrogenic homone, has been isolated from the urine of a pregnant…
A: Here Given path length = 1 dm observed rotation = +2.32 degree Mass of estriol = 40 mg volume of…
Q: Calculate the wavenumber of the C-Cl band in CCl4.
A: the wavenumber of C-Cl bond in CCl4 is calculated using the formula: ν' =1/2πck/μ where k=force…
Q: Which of the following explains why a more concentrated dye solution has a higher absorbance?…
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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: (R)-Camphor [a]20, = +44.0°/(g/mL)dm %3D A researcher places a 0.5 g/mL sample of camphor into a 1.0…
A: The formula for the enantiomeric excess, ee, is
Q: 27 Roughly how far does an infrared beam penetrate into t Select one: 1 pm 1 um 1 μΜ 1 nm
A: ATR-Attenuated Total Reflectance. FTIR- Fourier Transform Infrared spectroscopy. ATR-FTIR is used to…
Q: Draw a plot having X-axis as concentration (mol/L) and Y-axis as absorbance at λ max (525 nm).…
A: 1. Concentration vs absorbance plot
Q: A solution of (S)-2-butanol (molar mass = 74.12) is observed to have a rotation in a 10.0 cm…
A: Optical rotation = specific rotation × length of the tube × concentration .
Q: Predict the observed rotation for a 0.100 M aqueous solution of L-tartaric acid measured in a 1.0 dm…
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Q: What is the specific rotation 20[a ]D of the following molecule? * a = 4.42° C = 0.1g.mr" | = 10cm -…
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Q: A solution of a chiral compound was prepared by dissolving 15.67 g in 16.00 mL of solvent. The…
A: Given data: Observed rotation = 62.41° Path length = 1.00 dm Mass of compound = 15.67 g Volume of…
Q: The optical rotation of a sample was found to be 0.24° when the concentration was 0.60 g in 10 mL of…
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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: 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: Find the specific optical rotation of (S)-malic acid having an observed rotation of +15. 5° at a…
A: The specific rotation can be expressed mathematically as follows: α = αobservedC×lα = Specific…
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: 4. 1.00 g of sample is dissolved in 20.0 mL of ethanol. Then 5.00 mL of this solution is placed in a…
A: Given: Observed rotation of the sample = 1.25o Mass of sample = 1.00 g Volume of sample = 20.0 mL…
Q: (S)-2-Bromobutane has a specific rotation of +23.1°. Suppose that a solution is made by dissolving…
A: At a given temperature, the chiral compound will rotate the plane polarised light at a particular…
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: What is the specific rotation of glucose(MW 180) with a density of 1.56g/mL and an angular rotation…
A: Dear student,since you have asked multiple questions but according to guidelines we will solve 1st…
Q: 5. Calculate the percent transmittance of B-carotene that has an absorbance of 0.5 when analysed…
A: A =-log TT = 10-A where, A= Absorbance = 0.5 T = Transmittance Putting values we get, T = 10-A T =…
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: A solution of 0.50 g of (-)@epinephrine dissolved in 10.0 mL of diluteaqueous HCl was placed in a…
A: The specific rotation is given by formula, The molarity of the solution is calculated using grams…
Q: Choose whether Atomic Absorption Spectroscopy (AAS) or Gas Chromatography Mass Spectrometry (GCMS)…
A: Here we have to determine which method should we use between AAS and GC-MS for the detection of the…
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 drug X (M.W. =300) has a molar absorptivity of 905 at 254 nm. One tablet containing this drug X is…
A: Given : A = 0.655 Length of cell = 1 cm Molar absorptivity = 905
Q: A 6.91 x 10-M sample of compound X in a solvent has an absorbance of 0.229 at 528 nm in a 1.000 cm…
A: The relation between absorbance and concentration is given as : A = e × C × l where , A =…
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- 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.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.An aqueous solution containing 7.037.03 g of an optically-pure compound was diluted to 7.00×1027.00×102 mL with water and placed in a 15.015.0 cm long polarimeter tube. The measured rotation was −3.83°−3.83° at 25°25° C. Calculate the specific rotation of the compound.
- 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?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 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°.
- If a substance is known to have a specific rotation of +20.0 deg mL/g dm, what is the concentration (in g/mL) of a solution that would give an observed rotation of +10.0 degrees, if the path length of the sample tube was 1.00 dm? Can you do this problem in your head?A 0.712 Kg of sugar was dissolved in 600 mL of water. The optical rotation of the sugar using a 5.0 cm polarimeter tube is known to be +15.45○ mL/ dm g. What is the actual rotation of the substance?1. What is the specific rotation of glucose(MW 180) with a density of 1.56g/mL and an angular rotation of +1.24° in a 1dm tube? 2. A 10.0% Atropine solution was analyzed using a polarimeter in a 2 dm tube, the reading from the polarimeter was +1.22° and the solvent alone is +1.20°, calculate its specific rotation. 3. An Aspirin solution was placed in an oven at 60°C. The absorbance was taken every month for 3 months. The kinetic profile equation is y= -0.0165x – 1.205. If Aspirin was manufactured November 26, 2021, what is its expiration date?
- A solution of 2.0 g of (+)-glyceraldehyde, HOCH2CHOHCHO, in 10.0 mL of water was placed in a 100-mm cell. Using the sodium D line, a rotation of +1.74° was found at 25 °C. Determine the specific rotation of (+)@glyceraldehyde.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.what are the significant peaks of C4H9Br at 2970 cm-1 1209 cm-1