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Problem
Which equation(s) represent the incomplete combustion of methane? - I.
CH
4
(
g
)
+
2
O
2
(
g
)
→
CO
2
(
g
)
+
2
H
2
O
(
g
)
\text{CH}_4(\text{g}) + 2\text{O}_2(\text{g}) \rightarrow \text{CO}_2(\text{g}) + 2\text{H}_2\text{O}(\text{g})
CH
4
(
g
)
+
2
O
2
(
g
)
→
CO
2
(
g
)
+
2
H
2
O
(
g
)
- II.
CH
4
(
g
)
+
1
1
2
O
2
(
g
)
→
CO
(
g
)
+
2
H
2
O
(
g
)
\text{CH}_4(\text{g}) + 1\tfrac{1}{2}\text{O}_2(\text{g}) \rightarrow \text{CO}(\text{g}) + 2\text{H}_2\text{O}(\text{g})
CH
4
(
g
)
+
1
2
1
O
2
(
g
)
→
CO
(
g
)
+
2
H
2
O
(
g
)
- III.
CH
4
(
g
)
+
O
2
(
g
)
→
C
(
s
)
+
2
H
2
O
(
g
)
\text{CH}_4(\text{g}) + \text{O}_2(\text{g}) \rightarrow \text{C}(\text{s}) + 2\text{H}_2\text{O}(\text{g})
CH
4
(
g
)
+
O
2
(
g
)
→
C
(
s
)
+
2
H
2
O
(
g
)
a. I, II and III b. II and III only c. III only d. II only
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