E. Identify more favourable resonance
structure from the following. Justify.
a. CH - C - OH CH - C = OH
b.
oe
CH, - CH=CH-CH, - CH=C- H
Answers
Answered by
15
Answer:
Just remember that the electrons will move to the more electronegative atom or the more positive atom.
(a) But-2en-al
There is no positive atom, but
O
is the most electronegative atom, so let's move electrons to the
O
atom.
CH
3
CH=CHCH=O
A
⟷
CH
3
CH=CH
+
C
H-
−
O
B
Now the carbon atom has a
+
charge, so let's move electrons to it.
CH
3
CH=CH
+
C
H-
−
O
B
→
CH
3
+
C
H-CH=CH-
−
O
C
Structure
A
has the lowest energy and is the major contributor.
Structures
B
and
C
are higher in energy and are minor contributors.
(b) Acetate ion
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