112-2生科系有機化學CH3

How many stereoisomers of this compound are there ?

• 3

• 4

• 8

• 16

How many compounds shown below are optically active ?

• 1

• 2

• 3

• 4

What is the chirality of this compound ?

• (2R,3R)

• (2R,3S)

• (2S,3R)

• (2S,3S)

What is the chirality of the highlighted carbon ?

• R

• S

What is the chirality of this compound ?

• (2R,3R)

• (2R,3S)

• (2S,3R)

• (2S,3S)

What is the chirality of the highlighted carbon ?

• R

• S

• Achiral

Is the following mixture optically active ?

• Yes

• No

• 
  Unpredictable

What is the chirality of this compound ?

• (1R,3R)

• (1S,3R)

• (1R,3S)

• (1S,3S)

下列有關旋光度(Observed rotation)的敘述何者錯誤?

• 樣品管中樣品的濃度加倍，觀察到的旋光度也會加倍

• 樣品管中的樣品濃度固定，但光徑長度加倍時，則旋光度會減半。

• benzene的旋光度=0

• racemic mixture的旋光度=0

What is the relationship between the following two compounds ?

• diastereomer

• meso

• enantiomer

• identical