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Standard XII
Chemistry
Carbon Monoxide
Calculate sta...
Question
Calculate standard heat of combustion of ethanol(C2H5OH(I)). Given that A,H (C2H5OH, I)- 278 kJ/mol, AH^° (CO2, g)(H20, I) =- 286 kJ/mol.- 394 kJ and AH
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Similar questions
Q.
The standard enthalpy of formation of octane
(
C
8
H
18
)
is
−
250
k
J
/
m
o
l
. Calculate the enthalpy of combustion of
C
8
H
18
.
Given : enthalpy of formation of
C
O
2
(
g
)
and
H
2
O
(
l
)
are
−
394
k
J
/
m
o
l
and
−
286
k
J
/
m
o
l
respectively:
Q.
Given standard enthalpy of formation of
C
O
(-110 KJ
m
o
l
−
1
) and
C
O
2
(-394 KJ
m
o
l
−
1
). The heat of combustion when one mole of graphite burns is:
Q.
The standard enthalpies of combustion of
C
6
H
6
(
l
)
,
C
(
g
r
a
p
h
i
t
e
)
and
H
2
(
g
)
are respectively
−
3270
k
J
m
o
l
−
1
,
−
394
k
J
m
o
l
−
1
and
−
286
k
J
m
o
l
−
1
. What is the standard enthalpy of formation of
C
6
H
6
(
l
)
in
k
J
m
o
l
−
1
?
Q.
The standard enthalpy of formation of propene,
C
3
H
6
is +20.6 kJ mol
−
1
. The heats of formation of
C
O
2
(
g
)
and
H
2
O
(
l
)
are -394 kJ mol
−
1
. and -285.8 kJ mol
−
1
.
Calculate the heat of combustion of one mole of
C
3
H
6
.
Q.
Calculate the heat of combustion of ethene
C
H
2
=
C
H
2
(
g
)
+
3
O
2
(
g
)
→
2
C
O
2
(
g
)
+
2
H
2
O
(
I
)
The bond energy data are given below
C
=
C
=
619
k
J
m
o
l
−
1
C
−
H
=
414
k
J
m
o
l
−
1
O
=
O
=
499
k
J
m
o
l
−
1
C
=
O
=
724
k
J
m
o
l
−
1
O
−
H
=
460
k
J
m
o
l
−
1
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