Dr. VMV weighed out 1.02 g of menthol and dissolved it into 10.0 mL of absolute ethanol in a 10.0 mL volumetric flask. The optical rotation for this solution was obtained in a cell with a 50 mm optical path length, found to be -2.508°, using the Na D-line at 25.1 °C. What is the specific rotation?
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
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Dr. VMV weighed out 1.02 g of menthol and dissolved it into 10.0 mL of absolute ethanol in a 10.0 mL volumetric flask. The optical rotation for this solution was obtained in a cell with a 50 mm optical path length, found to be -2.508°, using the Na D-line at 25.1 °C. What is the specific rotation?
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- 1. Dr. VMV weighed out 1.02 g of menthol and dissolved it into 10.0 mL of absolute ethanol in a 10.0 mL volumetric flask. The optical rotation for this solution was obtained in a cell with a 50 mm optical path length, found to be -2.508°, using the Na D-line at 25.1 °C. What is the specific rotation? 2.0.5 g of optically-enriched (-)-mandelic acid was dissolved in 10 mL of absolute ethanol. Using a 1 dm polarimeter tube, the observed optical rotation was found to be-6.8°. What is the specific rotation? 3. Pure (-)-mandelic acid has a specific rotation of -160° (same conditions and temperature as sample above). What is the % optical purity of the sample above?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.
- 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 specific rotation of (R)-2-butanol is 13.5° counterclockwise. A sample containing (R)-2-butanol was made by dissolving 1.75 g into a solution with a total volume of 3.55 mL. The light source was a sodium D line and the temperature was 25° C. The length of the sample tube was 12.5 cm. What was the observed rotation of the sample? "Use three significant figures for your answer and the correct sign.5. A solution containing 2.0g of compound dissolved in 50mL of solvent generated an observed rotation of plane-polarized light (A = 589.6nm) of 20° in a polarimeter tube 300mm long at a temperature of 25°C. What is the specific rotation of the compound?
- A 1.25 g sample of coniine, the toxic extract of hemlock, was dissolved in ethanol and placed in a sample cell with a 5.00 cm pathlength. The observed rotation at the sodium D line was +1.21° and [a]pwas +19.4°. Calculate the volume of ethanol us dissolve the sample. O a. 5.0 mL O b. 10.0 mL O c. 20.0 mL O d. 15.0 mL Save Answer A 1.25 g sample of coniine, the toxic extract of hemlock, was dissolved in ethanol and placed in a sample cell with a 5.00 cm pathlength. The observed rotation at the sodium D line was +1.21° and [a]pwas +19.4°. Calculate the volume of ethanol us dissolve the sample. Oa. 5.0 mL Ob. 10.0 mL Oc. 20.0 mL O d. 15.0 mL Save Answer A 1.25 g sample of coniine, the toxic extract of hemlock, was dissolved in ethanol and placed in a sample cell with a 5.00 cm pathlength. The observed rotation at the sodium D line was +1.21° and [a]pwas +19.4°. Calculate the volume of ethanol us dissolve the sample. Oa. 5.0 mL O b. 10.0 mL O c. 20.0 mL O d. 15.0 mL Save AnswerAn aqueous solution containing 5.13 g of an optically-pure compound was diluted to 5.00 x 10² mL with water and placed in a 15.0 cm long polarimeter tube. The measured rotation was -2.55° at 25° C. Calculate the specific rotation of the compound. [a]³5 =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?
- 3.5 mg of optically-enriched (-) sugar P was dissolved in 1.00 mL methanol in a 1.00 mL volumetric flask. The optical rotation was found to be -0.0222° in a 5.0 cm cell. What is the specific rotation? Write out all your work and upload it here.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.A 23.9061 g of Ethambutol hydrochloride was diluted with 100 mL of water and was analyzed in a 1.0 dm polarimeter tube. What is the specific rotation if the observed rotation using a D-line sodium lamp at a 589 visible wavelength and at 25°C is +1.53°. Answer the following: Calculate for the specific rotation of the sample What is the monograph specification for the specific rotation of ethambutol? Disposition