1. Calculate the observed rotation, a one would measure for a 20.0% (m/v) D-glucose solution if a 2 dm sample holder is used 2. what would be the similarity or difference of the observed rotation if the L-glucose is used rather than D- glucose for the above experiment.

View Policies Current Attempt in Progress When 0.234 g of monosodium glutamate (MSG) is dissolved in 10.0 mL of water and placed in a sample cell 10.0 cm in length, the observed rotation at 20°(using the D line of sodium) is +0.599°. Calculate the specific rotation of MSG. specific rotation = [a] = i eTexthook and Media

The [a] of pure quinine, an antimalarial drug, is –165. a. Calculate the ee of a solution with the following [a] values: –50, –83, and –120. b. For each ee, calculate the percent of each enantiomer present. c. What is [a] for the enantiomer of quinine? d. If a solution contains 80% quinine and 20% of its enantiomer, what is the ee of Но е ее the solution? CH30 e. What is [a] for the solution described in part (d)? N quinine (antimalarial drug)

The specific rotation for a pure enantiomer is known to be -45 g- mL-1 dm-1. A sample containing both enantiomers is found to have an observed rotation of -0.50° in a 1dm tube at a concentration of 4.2g/100 mL. What is the optical purity of the sample? O a. 20.6% Ob. 30.8% Oc. 26.4% O d. 36.5%

1. When 0.247 g of monosodium glutamate (MSG) is dissolved in 10.0 mL of water and placed in a sample cell 10.0 cm in length, the observed rotation at 20°(using the D line of sodium) is +0.632°. Calculate the specific rotation of MSG. 2. When 0.095 g of cholesterol is dissolved in 1.00 mL of ether and placed in a sample cell 10.0 cm in length, the observed rotation at 20°C (using the D line of sodium) is -0.299°.Calculate the specific rotation of cholesterol.3. The specific rotation of L-dopa in water (at 15°C) is -39.5. A chemist prepared a mixture of L-dopa and its enantiomer, and this mixture had a specific rotation of -34. Calculate the % ee of this mixture. 4. The specific rotation of vitamin B7 in water (at 22°C) is +92. A chemist prepared a mixture of vitamin B7 and its enantiomer, and this mixture had a specific rotation of +18. Calculate the % ee of this mixture.

A. When one of the enantiomers of 2-butanol is placed in a polarimeter, the observed rotation is 4.050 counterclockwise. The solution was made by diluting 6.0 grams of (-)-2-butanol to a total of 40.0 mL and the solution was placed into a 200 mm polarimeter tube for the measurement. Determine the specific rotation for this enantiomer of 2-butanol. Show work using the equation function (insert tab of the editing menu above) to receive credit. Uploaded answers or work without using the equation function, will not be graded. B. What will be the specific rotation of the dextrorotatory enantiomer?

None

please answer

None

6. When one of the enantiomers of 2-hexanol is placed in a polarimeter, a rotation of 8,100 is observed against the hands of the clock. The solution was prepared by diluting 12 g of 2-hexanol in a total of 80 mLt by placing the resulting solution in a 400 mm long polarimeter cell. Determine the specific rotation of this 2-hexanol enantiomer.