When a student took a measurement of the optical rotation of a 0.0517 M solution of...
When a student took a measurement of the optical rotation of a 0.0517 M solution of an unknown alcohol in ethanol (15 mL) in a 10 cm polarimeter tube she found it to be -0.630 degrees. What was the specific rotation of the unknown alcohol which has a gram molar mass of 386.65?
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When a student took a measurement of the optical rotation of a
0.0517 M solution of...
repared a limonene sample with a concentration of 0.044 g/mL and measured an optical rotation of a=8.78 degrees usi...
repared a limonene sample with a concentration of 0.044 g/mL and measured an optical rotation of a=8.78 degrees using a 20 cm polarimeter tube. Calculate the specific rotation () of the students limonene sample and write your answer in the box. (review Example 1 in the procedure for how to do this) 6. If a mixture of (R) and (S)-Limonene Acid gives a %ee of 80.35% favoring the R enantiomer, use this to calculate the ratio of R to S...
The specific rotation, (a)p, for (+)-alanine is +8.5. What is the observed rotation for a solution...
The specific rotation, (a)p, for (+)-alanine is +8.5. What is the observed rotation for a solution of 1.7 g of (+)-alanine in 10 mL of water in a sample tube having a pathlength of 10 cm? degrees The observed rotation of a solution of 1.3 g of a compound in 10 mL of water is +8.2 degrees. If the pathlength is 10 cm, what is the specific rotation of the compound? The specific rotation, (a)p, for(-)-pseudoephedrine is - 52. What...
7 (7 pts) The specific rotation, (a), of an optically pure natural product 15 compound we...
7 (7 pts) The specific rotation, (a), of an optically pure natural product 15 compound we made in the lab was prepared by diluting 12.55 grams of it in a 30.0 cm polarimeter tube. pure natural product is -65.0°. A sample of the same uuting 12.55 grams of it into 40.0 ml of ethanol and placed A) Our compound was found to have an "ee" of 80% - What was the specific totam % - What was the specific rotation...
The specific rotation, [a]D, for (-)-pseudoephedrine is-52. What is the observed rotation for a solution of...
The specific rotation, [a]D, for (-)-pseudoephedrine is-52. What is the observed rotation for a solution of 0.50 g of (-)- pseudoephedrine in 10 mL of water in a sample tube having a pathlength of 10 cm? degrees The observed rotation of a solution of 1.7 g of a compound in 10 mL of water is +13 degrees. If the pathlength is 10 cm, what is the specific rotation of the compound? Submit Answer Retry Entire Group No more group attempts...
The specific rotation [α] of (1S, 2R)-ephedrine HCl salt in water is −32.5° at 22 °C (light source: sodium D line). What is the optical rotation α in degrees (°) of an aqueous solution containing 250...
The specific rotation [α] of (1S, 2R)-ephedrine HCl salt in water is −32.5° at 22 °C (light source: sodium D line). What is the optical rotation α in degrees (°) of an aqueous solution containing 250 mg/mL (1R, 2S)-ephedrine HCl salt AND 50 mg/mL (1S, 2R)-ephedrine HCl salt measured using a 1.00-cm pathlength tube under the same condition?
Q)a)An aqueous solution containing 10g of optically pure fructose was diluted to 500mL with water and...
Q)a)An aqueous solution containing 10g of optically pure fructose was diluted to 500mL with water and placed in a polarimeter tube 20 cm long.The measured rotation was -5.20 degrees.Calculate the specific rotation of fructose. b)If this solution were mixed with 500 mL of a solution containing 5 g of racemic fructose,what would be the specific rotation of the resulting fructose mixture?What would be its optical purity?
4. 0.050 g of sample is dissolved in 2.0 mL of ethanol, and this solution is...
4. 0.050 g of sample is dissolved in 2.0 mL of ethanol, and this solution is placed in a 2.0-cm polarimeter tube. The observed rotation is clockwise 0.043. Calculate the specific rotations taken at 25°C using the sodium D line.
CH, CH CH,CH Compound A CH3 CH3 но CH3 CH3 CH3 CH3 Compound B 4.43 a) An aqueous solution containing 10 g of optically pure fructose was diluted to 500 mL with water and placed in a polarimeter t...
CH, CH CH,CH Compound A CH3 CH3 но CH3 CH3 CH3 CH3 Compound B 4.43 a) An aqueous solution containing 10 g of optically pure fructose was diluted to 500 mL with water and placed in a polarimeter tube 20 cm long. The measured rotation was 5.20°. Calculate the specific rotation of fructose. (b) If this solution were mixed with 500 mL of a solution containing 5 g of racemic fructose, what would be the specific rotation of the resulting...
10.0 mL of Solution B is added to a polarimeter tube that has a path length...
10.0 mL of Solution B is added to a polarimeter tube that has a path length of 10.0 cm. If the observed rotation is +2.02, the concentration is .03g/ml a. what is the specific rotation of the unknown sugar? b. which sugar is this most likely to be? (choose from the list of common unknown) D-(+)-sucrose + 66.54 D-(+)-glucose + 52.74 D-(-)-fructose - 93.78 sugars).
When a sucrose solution is placed in a 10.00 cm polarimeter tube, the observed rotation at...
When a sucrose solution is placed in a 10.00 cm polarimeter tube, the observed rotation at 20 degree Celsius using the D line of sodium is+19.92 degree. Calculate the concentration of the solution. [?]=+66.4 degree for sucrose.?
repared a limonene sample with a concentration of 0.044 g/mL and measured an optical rotation of a=8.78 degrees using a 20 cm polarimeter tube. Calculate the specific rotation () of the students limonene sample and write your answer in the box. (review Example 1 in the procedure for how to do this) 6. If a mixture of (R) and (S)-Limonene Acid gives a %ee of 80.35% favoring the R enantiomer, use this to calculate the ratio of R to S...
The specific rotation, (a)p, for (+)-alanine is +8.5. What is the observed rotation for a solution of 1.7 g of (+)-alanine in 10 mL of water in a sample tube having a pathlength of 10 cm? degrees The observed rotation of a solution of 1.3 g of a compound in 10 mL of water is +8.2 degrees. If the pathlength is 10 cm, what is the specific rotation of the compound? The specific rotation, (a)p, for(-)-pseudoephedrine is - 52. What...
7 (7 pts) The specific rotation, (a), of an optically pure natural product 15 compound we made in the lab was prepared by diluting 12.55 grams of it in a 30.0 cm polarimeter tube. pure natural product is -65.0°. A sample of the same uuting 12.55 grams of it into 40.0 ml of ethanol and placed A) Our compound was found to have an "ee" of 80% - What was the specific totam % - What was the specific rotation...
The specific rotation, [a]D, for (-)-pseudoephedrine is-52. What is the observed rotation for a solution of 0.50 g of (-)- pseudoephedrine in 10 mL of water in a sample tube having a pathlength of 10 cm? degrees The observed rotation of a solution of 1.7 g of a compound in 10 mL of water is +13 degrees. If the pathlength is 10 cm, what is the specific rotation of the compound? Submit Answer Retry Entire Group No more group attempts...
4. 0.050 g of sample is dissolved in 2.0 mL of ethanol, and this solution is placed in a 2.0-cm polarimeter tube. The observed rotation is clockwise 0.043. Calculate the specific rotations taken at 25°C using the sodium D line.
CH, CH CH,CH Compound A CH3 CH3 но CH3 CH3 CH3 CH3 Compound B 4.43 a) An aqueous solution containing 10 g of optically pure fructose was diluted to 500 mL with water and placed in a polarimeter tube 20 cm long. The measured rotation was 5.20°. Calculate the specific rotation of fructose. (b) If this solution were mixed with 500 mL of a solution containing 5 g of racemic fructose, what would be the specific rotation of the resulting...
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