CHEM 219 MODULE 3 MASTER REVIEW
SCRIPT WITH THOROUGHLY SOLVED
QUESTIONS AND EXPERT INSIGHT
◉ Total number of steroisomers possible
Answer: 2^n (n=number of stereocenters)
◉ Meso compound
Answer: a molecule that contains stereocenters but is
superimposable on its own mirror image. Due to this, meso
compounds are achiral
◉ Wedge vs. Dash
Answer: Wedge (also horizontal lines) = toward reader, Dash (also
vertical lines) = Away from reader
◉ "E" configuration
Answer: When the groups of highest priority are on opposite sides
of the C=C,
◉ "Z" configuration
Answer: When the two groups of higher priority are on the same
side of the C=C
SCRIPT WITH THOROUGHLY SOLVED
QUESTIONS AND EXPERT INSIGHT
◉ Total number of steroisomers possible
Answer: 2^n (n=number of stereocenters)
◉ Meso compound
Answer: a molecule that contains stereocenters but is
superimposable on its own mirror image. Due to this, meso
compounds are achiral
◉ Wedge vs. Dash
Answer: Wedge (also horizontal lines) = toward reader, Dash (also
vertical lines) = Away from reader
◉ "E" configuration
Answer: When the groups of highest priority are on opposite sides
of the C=C,
◉ "Z" configuration
Answer: When the two groups of higher priority are on the same
side of the C=C