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When of propane,
CHEMISTRY · Subjective · A Level · Chemistry · Energetics · Energetics
Problem
When
15.0
g
15.0\,\text{g}
15.0
g
of propane,
C
3
H
8
\mathrm{C_3H_8}
C
3
H
8
, is completely combusted according to the reaction
C
3
H
8
(
g
)
+
5
O
2
(
g
)
→
3
C
O
2
(
g
)
+
4
H
2
O
(
g
)
\mathrm{C_3H_8(g)+5\,O_2(g)\to3\,CO_2(g)+4\,H_2O(g)}
C
3
H
8
(
g
)
+
5
O
2
(
g
)
→
3
C
O
2
(
g
)
+
4
H
2
O
(
g
)
with an enthalpy change of
Δ
H
rxn
=
−
2.22
×
10
3
kJ
mol
−
1
\Delta H_{\text{rxn}}=-2.22\times10^{3}\,\text{kJ}\,\text{mol}^{-1}
Δ
H
rxn
=
−
2.22
×
1
0
3
kJ
mol
−
1
, calculate the quantity of heat released, including its sign.
Related theory
Thermodynamics
Types of enthalpy
Enthalpy Changes of Reactions
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