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Question
Chemistry
When acetaldehyde is heated with Fehling solution, a red precipitate is formed. Which of the following is that ?
Q. When acetaldehyde is heated with Fehling solution, a red precipitate is formed. Which of the following is that ?
1425
177
EAMCET
EAMCET 2006
Aldehydes Ketones and Carboxylic Acids
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A
C
u
2
O
B
C
u
C
C
u
O
D
C
u
S
O
4
Solution:
When acetaldehyde is heated with Fehling solution, a red precipitate of
C
u
2
O
is obtained.
C
H
3
C
H
O
+
2
C
u
(
O
H
)
2
+
N
a
O
H
⟶
C
H
3
⋅
COON
a
+
Red
C
u
2
O
↓
+
3
H
2
O