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Chemistry
Chemistry
Problem
Which of the following balanced chemical equations represents a combustion reaction? a)
4
F
e
(
s
)
+
3
O
2
(
g
)
→
2
F
e
2
O
3
(
s
)
4\,\mathrm{Fe}(s)+3\,\mathrm{O_2}(g)\rightarrow2\,\mathrm{Fe_2O_3}(s)
4
Fe
(
s
)
+
3
O
2
(
g
)
→
2
F
e
2
O
3
(
s
)
b)
C
3
H
8
(
g
)
+
C
l
2
(
g
)
→
C
3
H
7
C
l
(
g
)
+
H
C
l
(
g
)
\mathrm{C_3H_8}(g)+\mathrm{Cl_2}(g)\rightarrow\mathrm{C_3H_7Cl}(g)+\mathrm{HCl}(g)
C
3
H
8
(
g
)
+
C
l
2
(
g
)
→
C
3
H
7
Cl
(
g
)
+
HCl
(
g
)
c)
2
C
3
H
7
O
H
(
l
)
+
9
O
2
(
g
)
→
6
C
O
2
(
g
)
+
8
H
2
O
(
g
)
2\,\mathrm{C_3H_7OH}(l)+9\,\mathrm{O_2}(g)\rightarrow6\,\mathrm{CO_2}(g)+8\,\mathrm{H_2O}(g)
2
C
3
H
7
OH
(
l
)
+
9
O
2
(
g
)
→
6
C
O
2
(
g
)
+
8
H
2
O
(
g
)
d)
2
C
O
(
g
)
+
O
2
(
g
)
→
2
C
O
2
(
g
)
2\,\mathrm{CO}(g)+\mathrm{O_2}(g)\rightarrow2\,\mathrm{CO_2}(g)
2
CO
(
g
)
+
O
2
(
g
)
→
2
C
O
2
(
g
)
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