Determine if each of the following statements about chiral molecules is True or
ID: 484222 • Letter: D
Question
Determine if each of the following statements about chiral molecules is True or False and select the best answer from the dropdown menus.
True or False: All R stereocenters are dextrorotatory.
True or False: Chiral centers in organic molecules will have 4 different groups attached to a carbon.
True or False: A racemic mixture has an optical activity of 0.
True or False: Normal linear amines can be chiral centers.
True or False: Compound C has an optical activity of 0.
True or False: If the R isomer of a molecule has an optical rotation of + 25.7 degree then the S isomer of the molecule will have an optical rotation of -25.7 degree.
True or False: A CN is higher priority than a CH2OH.
True or False: All molecules with chiral centers are optically active.
True or False: To have an enantiomer a molecule must have at least two chiral centers.
True or False: Chiral molecules are always optically active.
True or False: A CH2CH2Br is higher priority than a CH2F.
True or False: Meso molecules with two stereocenters have a R,S configuration.
True or False: Diastereomers have the same physical properties except in a chiral environment.
True or False: Compound H has an optical activity of 0.
True or False: A C=C double bond is higher priority than a -CH(CH3)2.
Explanation / Answer
All R stereocentres are dextrorotatory (false). A R centre may be dextrorotatory or levorotatory.
Chiral centres in organic molecules will have four different groups attached to a carbon. (true)
A racemicmixture has optical activity 0 (True).
Normal linear amines can be chiral centres (False).
Compound C has optical activity 0 (structure needed).
If the R isomer of a molecule has an optical rotation of +25.7 degree then the S isomer of the molecule will have an optical rotation of -25.7 degree (True).
A CN is higher priority than a CH2OH (false). In CH2OH carbon is attached more atomic number oxygen.
All molecules with chiral centers are optically active. (False). Meso compounds with chiral centres are optically inactive.
To have an enantiomer a molecule must have at least two chiral centers. (False). One chiral center is sufficient for enantiomer.
Chiral molecules are always optically active. (False). Meso compounds having chiral centers are optically inactive.
A CH2CH2Br is higher priority than a CH2F (False). In A CH2 is attached to another CH2 (carbon atomic number 6). In CH2F carbon is attached to fluorine (atomic number 9).
Meso molecules with two stereocenters have a R,S configuration. (False). Meso compounds may have RR or RS or
SR or SS.
Diastereomers have the same physical properties except in a chiral environment. (False). Enantiomers having same physical properties.
Compound H has an optical activity of 0 ( structure needed)
A C=C double bond is higher priority than a CH(CH3)2 (True).
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.