4. 0.050 g of sample is dissolved in 2.0 mL of ethanol, and this solution is...
4. a) 7.00 mg sample dissolved in 1.00ml solvent and solution was placed in a cell with 2.00 cm pathlength, an observed rotation of +0.08 was found. Calculate [a ]p for sample. b) A sample with a concentration of 0.3 g/mL was placed in a cell with a length of 5 cm. The resulting rotation at the sodium D line was t1.52°. What is the [a]D?
5.49 When 0.075 g of penicillamine is dissolved in 10,0 mL of pyridine and placed e is dissolved in 10.0 mL of pyridine and placed in a sample cell min length, the observed rotation at 20°C (using the D line of sodium) is -0.47°. Calculate the specific rotation of penicillamine.
An aqueous solution containing 7.17 g of an optically pure compound was diluted to 300.0 mL with water and placed in a polarimeter tube 15.0 cm long. The measured rotation was –2.15° at 25 °C. Calculate the specific rotation of the compound. The specific reoation equation is determined by the equation: An aqueous solution containing 7.17 g of an optically pure compound was diluted to 300.0 mL with water and placed in a polarimeter tube 15.0 cm long. The measured...
An aqueous solution containing 4.71 g of an optically pure compound was diluted to 400.0 mL with water and placed in a polarimeter tube 15.0 cm long. The measured rotation was -4.19℃ at 25 ℃. Calculate the specific rotation of the compound.
An aqueous solution containing 6.31 g of an optically pure compound was diluted to 600.0 mL with water and placed in a polarimeter tube 20.0 cm long. The measured rotation was –2.91° at 25 °C. Calculate the specific rotation of the compound.
An aqueous solution containing 6.13 g of an optically pure compound was diluted to 500.0 mL with water and placed in a polarimeter tube 20.0 cm long. The measured rotation was –5.97° at 25 °C. Calculate the specific rotation of the compound.
An aqueous solution containing 9.03 g of an optically pure compound was diluted to 800.0 mL with water and placed in a polarimeter tube 20.0 cm long. The measured rotation was –2.15° at 25 °C. Calculate the specific rotation of the compound.
An aqueous solution containing 6.33 g of an optically pure compound was diluted to 500.0 mL with water and placed in a polarimeter tube 10.0 cm long. The measured rotation was –5.91° at 25 °C. Calculate the specific rotation of the compound.
An aqueous solution containing 5.85 g of an optically pure compound was diluted to 800.0 mL with water and placed in a polarimeter tube 10.0 cm long. The measured rotation was -5.87 degree at 25 degree C. Calculate the specific rotation of the compound.
A sample of 2-butanol containing 0.375 g in 12.5 mL of solvent was analyzed in a polarimeter using a 10.0 cm polarimeter tube. The sample had an optical rotation , a, of -0.405. )A) What is the specific rotation of 2-butanol? (B) A sample of enantiomer of the compound in A had optical rotation of +0.670 in a 10.0 cm polarimeter tube. What is the concentration of the second sample?