Question

Suppose we dissolve 12.5 g of a chiral compound in 0.2L of solution and place it...

Suppose we dissolve 12.5 g of a chiral compound in 0.2L of solution and place it in a tube that is 20.00 cm long. What is the samples' specific rotation if the observed rotation os experimentally determined to be 4 degrees

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

specific rotation = observed rotation/l*c

   conc c=       12.5/200 = 0.0625g/ml

   length l = 20cm = 2dm

   specific rotation = observed rotation/l*c

                                = 4/2*0.0625

                                 = 4/0.125

                                = 320 >>>> answer

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The specific rotation, [α]D, for (-)-2-butanol is +14. What is the observed rotation for a solution...
The specific rotation, [α]D, for (-)-2-butanol is +14. What is the observed rotation for a solution of 3.3 g of (-)-2-butanol 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 +5.8 degrees. If the pathlength is 10 cm, what is the specific rotation of the compound? degrees
1a.) The specific rotation, [α]D, for (-)-pseudoephedrine is -52. What is the observed rotation for a...
1a.) The specific rotation, [α]D, for (-)-pseudoephedrine is -52. What is the observed rotation for a solution of 0.70 g of (-)-pseudoephedrine in 10 mL of water in a sample tube having a pathlength of 10 cm? The observed rotation of a solution of 0.75 g of a compound in 10 mL of water is -4.6 degrees. If the pathlength is 10 cm, what is the specific rotation of the compound? 1b.) The specific rotation, [α]D, for (-)-2-butanol is +14....
An aqueous solution containing 8.65 g of an optically pure compound was diluted to 600.0 mL...
An aqueous solution containing 8.65 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 –2.05° at 25 °C. Calculate the specific rotation of the compound.
An aqueous solution containing 6.83 g of an optically pure compound was diluted to 200.0 mL...
An aqueous solution containing 6.83 g of an optically pure compound was diluted to 200.0 mL with water and placed in a polarimeter tube 15.0 cm long. The measured rotation was –4.89° at 25 °C. Calculate the specific rotation of the compound.
An aqueous solution containing 4.69 g of an optically pure compound was diluted to 300.0 mL...
An aqueous solution containing 4.69 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 –3.17° at 25 °C. Calculate the specific rotation of the compound.
1) The specific rotation, [α]D, for sucrose is +67. What is the observed rotation for a...
1) The specific rotation, [α]D, for sucrose is +67. What is the observed rotation for a solution of 0.50 g of sucrose in 10 mL of water in a sample tube having a pathlength of 10 cm? Answer in degrees. 2) The observed rotation of a solution of 1.3 g of a compound in 10 mL of water is +11 degrees. If the pathlength is 10 cm, what is the specific rotation of the compound?
1.) The specific rotation, [?]D, for sucrose is +67. What is the observed rotation for a...
1.) The specific rotation, [?]D, for sucrose is +67. What is the observed rotation for a solution of 0.70 g of sucrose in 10 mL of water in a sample tube having a pathlength of 10 cm? ___degrees . 2.) 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?
A) assume you synthesized a molecule with a single chiral center. The known specific rotation for...
A) assume you synthesized a molecule with a single chiral center. The known specific rotation for the pure R enentiomer of this compound is +20 degrees. After you synthesis, you measure a specific rotation of +4 degrees. What is the ee of your compound ? Answer is 20% ee of R B) the S of a certain alcohol has a specific rotation (of a plane polarized light) of +8 degrees. What is the specific rotation of a solution of this...
You dissolve a compound with a molecular mass of 271.98 g/mol in a 10-mL volumetric flask....
You dissolve a compound with a molecular mass of 271.98 g/mol in a 10-mL volumetric flask. You remove a 1.00-mL aliquot, place it in a 25-mL volumetric flask and dilute it to the mark. The absorbance of this diluted solution at 329 nm was 0.485 in a 1.000-cm cuvet. The molar absorptivity for this compound at 329 nm is ε329 = 6133 M–1 cm–1. (a) What is the concentration of the compound in the cuvet? (b) What is the concentration...
You dissolve a compound with a molecular mass of 287.57 g/mol in a 10-mL volumetric flask....
You dissolve a compound with a molecular mass of 287.57 g/mol in a 10-mL volumetric flask. You remove a 1.00-mL aliquot, place it in a 25-mL volumetric flask and dilute it to the mark. The absorbance of this diluted solution at 349 nm was 0.486 in a 1.000-cm cuvet. The molar absorptivity for this compound at 349 nm is ε349 = 5911 M–1 cm–1.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT