chem

posted by .

An optical rotation study gives a result of alpha=+140 degrees. Suggest a dilution experiment to test whether the result is indeed +140 degrees, and not -220 degrees.

-could polarimetry experiment be used to find the r and s isomer?

  • chem -

    Yes, I think it can. This problem has been posted before and I suggested diluting the sample by a factor of 10 and measuring the rotation. If the original was indeed 140 degrees, then the new measurement would show 14.0 degrees. If the original measurement was -220 degrees, the new measurement would be -22.0 degrees. There would be no confusion between +14 and -22. Check my thinking.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    An optical rotation study gives result of +140 degrees. Suggest a dilution experiment to test whether the results is indeed +140 degrees, not-200 degrees. THANK YOU!
  2. AP Chem

    Help with these two please. 105. A radioactive metal atom decays (goes to another kind of atom) by emitting an alpha particle (He+2 ion). The alpha particles are collected as helium gas. A sample of helium with a volume of 12.05 mL …
  3. organic chemistry

    An optical rotation study gives a result of +140 degrees. Suggest a dilution experiment to test whether the result is indeed +140 degrees, not -220 degrees.
  4. Chemistry!

    Experiment on Which Fuels Provide the Most Heat?
  5. Mat/116

    An experiment is underway to test the effect of extreme temperatures on a newly developed liquid. Two hours into the experiment the temperature of the liquid measured to be -17 degrees celsius. After eight hours of the experiment the …
  6. mat/116

    need an expression only to this word problem: An experiment is underway to test the extreme effect of a newly developed liquid. Two hours into the experiment the temperature if the liquid measured to be -17 degrees Celsius. After eight …
  7. Math

    Find the sum of the interior angles of a nonagon. A. 140 degrees B. 1,620 degrees C. 1,260 degrees D. 1,450 degrees Is the answer C?
  8. Geometry

    A right triangle has exterior angles at each of its acute angles with measures in the ratio 13:14. Find the measure of the smallest interior angle of the triangle. 40 (degrees) 50 (degrees) 130 (degrees) 140 (degrees) Please help?
  9. Organic Chemistry

    A sample of carvone was found to be 39% optically pure in favor of the dextrorotatory enantiomer. The specific rotation for enantiomerically pure carvone is 61o. The polarimetry experiment that led to this result was performed utilizing …
  10. math/geometry PLEASE HELP ME!

    Find the measure of the complement and the supplement of an angle with measure 50 degrees A. complement, 130 degrees; supplement, 40 degrees B. complement, 40 degrees; supplement, 40 degrees <my answer C. complement, 140 degrees; …

More Similar Questions