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Standard XII
Chemistry
Nomenclature of Alcohols
Molecular for...
Question
Molecular formula of ethanol is ?
A
C
H
3
O
H
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B
C
2
H
4
(
O
H
)
2
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C
C
2
H
5
O
H
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D
H
C
H
O
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Solution
The correct option is
C
C
2
H
5
O
H
The correct option is C. Ethanol is alcohol and is a primary
1
degree monohydric alcohol with moleculer formula
C
2
H
5
O
H
.
Suggest Corrections
1
Similar questions
Q.
C
2
H
5
O
H
can be differentiated from
C
H
3
O
H
by:
Q.
The compound having the molecular formula
C
2
H
4
O
2
is a :
Q.
Calculate the thermal effect of the reaction
C
2
H
4
+
H
2
O
=
C
2
H
5
O
H
, if
Δ
H
o
f
o
r
m
(
C
2
H
4
)
=
55
,
28
K
J
/
m
o
l
Δ
H
o
f
o
r
m
(
H
2
O
)
=
−
241.8
K
J
/
m
o
l
Δ
H
o
f
o
r
m
(
C
2
H
5
O
H
)
=
−
235.3
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J
/
m
o
l
.
Q.
At
20
o
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the vapour pressure of
C
H
3
O
H
and
C
2
H
5
O
H
is 94 mm and 44 mm, respectively.
If 20 g of
C
H
3
O
H
is mixed with 100 g of
C
2
H
5
O
H
, determine the total pressure of the solution (in mm)
Q.
Choose the correct answer from the four alternatives given in the brackets:
Alkanes have the general formula
C
n
H
2
n
+
2
. The molecular formula of the first hydrocarbon is ______.
(
C
H
4
,
C
2
H
4
,
C
2
H
6
,
C
2
H
2
)
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