Question

Draw the enantiomers for 2, 3
-
d
ibromopentane. Identify at
least one pair of diastereomers
(5)
among these structures. Can it form meso form? State the reason for your answer.
b)
Explain one application each for the study of paramagnetic and diamagnetic substances
(5)
using magnetic
susceptibility measurements. Comment on their dependence of these values
of temperature

Answer 1

Answer on Question #57404 – Chemistry – General Chemistry

Question:

a) Draw the enantiomers for 2, 3-dibromopentane. Identify at least one pair of diastereomers among these structures. Can it form mesoform? State the reason for your answer.

Answer:

(R,S)-2,3-dibromopentane, (S,S)-2,3-dibromopentane, (S,R)-2,3-dibromopentane, and (R,R)-2,3-dibromopentane are enantiomers. Two pairs of diastereomers can be identified among these structures: (S,S)-2,3-dibromopentane with (R,R)-2,3-dibromopentane, and (R,S)-2,3-dibromopentane with (S,R)-2,3-dibromopentane. There are also two mesoforms: (R,S)-2,3-dibromopentane with (S,R)-2,3-dibromopentane.

Question:

b) Explain one application each for the study of paramagnetic and diamagnetic substances using magnetic susceptibility measurements. Comment on their dependence of these values of temperature.

Answer:

Paramagnetic materials have a small, positive susceptibility to magnetic fields. On the contrary, diamagnetic materials have negative magnetic susceptibility. Magnetic susceptibility decays hyperbolical with the increase of temperature for paramagnetic materials; magnetic susceptibility for the diamagnetic materials remains constant with the change of temperature.

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