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Question
Chemistry
The charring of sugar takes place when treated with concentrated H2SO4 . What is the type of reaction involved in it?
Q. The charring of sugar takes place when treated with concentrated
H
2
S
O
4
. What is the type of reaction involved in it?
2192
225
EAMCET
EAMCET 2014
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A
Dehydration reaction
B
Hydrolysis reaction
C
Addition reaction
D
Disproportionation reaction
Solution:
The charring of sugar is its dehydration process. When sugar is treated with conc.
H
2
S
O
4
, water molecules gets escaped and sugar charcoal is formed. Due to its further reaction with acid, smell of
S
O
2
is obtained.
Sugar
C
12
H
22
O
11
+
[
H
2
S
O
4
]
⟶
Sugar charcoal
12
C
+
[
H
2
O
+
H
2
S
O
4
]
C
+
2
H
2
S
O
4
⟶
2
S
O
2
+
C
O
2
+
2
H
2
O