This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Citral, a compound found in lemons and limes, is a mixture of two isomeric alkenes, cis- and ... (Read 40 times)

ENagel

  • Hero Member
  • *****
  • Posts: 540
on: Aug 23, 2018
Citral, a compound found in lemons and limes, is a mixture of two isomeric alkenes, cis- and trans-3,7-dimethyl-2,6-octadienal. Would you expect to see two spots, one for each isomeric alkene, when you analyzed this sample by thin layer chromatography? Explain.

Question 2

One of the known compounds you analyzed, 3,7-dimethyl-1,6-octadien-3-ol, is only available as a racemic mixture. Why did you not see two spots, one for each enantiomer, when you analyzed this sample?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

FergA

  • Sr. Member
  • ****
  • Posts: 352
Reply #1 on: Aug 23, 2018
Answer to Question 1



The two isomers of citral are diastereomers and therefore can potentially be separated because diastereomers can have different physical properties.

Answer to Question 2

Enantiomers are identical in all respects except for how they rotate plane-polarized light and how they interact with another chiral molecule. Therefore, because neither the stationary or mobile phase is chiral, there is no means of separating the two enantiomers and they show up as a single spot.


ENagel

  • Member
  • Posts: 540
Reply 2 on: Aug 23, 2018
YES! Correct, THANKS for helping me on my review

JCABRERA33

  • Member
  • Posts: 344
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Shapes of cells found in the brain. Shapes of cells found in the brain.
Detonation is a secondary ignition of the air–fuel mixture. It is also called spark knock or ... Detonation is a secondary ignition of the air–fuel mixture. It is also called spark knock or ...
House Compound in Sirigu House Compound in Sirigu
Probiotics are live microorganisms, usually bacteria, mainly found in cultured dairy foods Probiotics are live microorganisms, usually bacteria, mainly found in cultured dairy foods
Compound Angle Formulas Compound Angle Formulas
Physics - A Mixture of Series and Parallel Capacitance Physics - A Mixture of Series and Parallel Capacitance
Video: Body plan of euglena Animation

For a complete list of videos, visit our video library