nd carbon dioxide produce in yeast
23. Write the name and molecular formula of the following compounds
a)
b)
H
H Η
x x
H**
XX
нх сxx) с
X.
H Η
*. H
XX
2A Samolocafe answer me please
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CHEMISTRY
A compound (X) has the molecular formula C
3
H
7
NO.
With Br
2
and KOH, (X) gives (Y). (Y) responds to mustard oil reaction. (Y) upon treatment with HNO
2
evolves N
2
and gives an alcohol (Z) which gives iodoform test. (X) is likely to be:
a. C
2
H
5
CONH
2
b. CH
3
CONH
2
c. CH
3
COONH
4
d. C
2
H
5
CNO
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ANSWER
The mixture of Br
2
with NaOH or KOH is used in Hoffmann's bromamide degradation reaction. It involves the conversion of a primary amide to a primary amine containing one carbon atom less than the original amide.
Hofmann mustard oil reaction is a test for primary amine.
Primary aliphatic amines with nitrous acid to form aliphatic diazonium salt which being unstable liberate nitrogen gas and alcohol.
Iodoform test is used to check the presence of carbonyl compounds with the structure R−CO−CH
3
or alcohols with the structure R−CH(OH)−CH
3
in a given unknown substance.
So, reaction of (X) with Br
2
+KOH suggests that (X) is an amide. Evolution of N
2
and formation of alcohol suggest that (Y) is a 1
0
aliphatic amine. Iodoform test of (Z) suggests that it is an alcohol of the type
⎝
⎛
CH
3
−
O
∣
H
C
H−
⎠
⎞
.
So, the primary amide (X) is propanamide and primary amine (Y) is ethylamine and alcohol (Z) is ethanol.
Hence, option A is correct.
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