4A: Balancing Combustion Reactions
Chapter 4
University of Arkansas at Little Rock
Dr. Robert Belford
Question 1
Balance the equation for the combustion of propane C
3
H
8
(A)
C
3
H
8
+O
2
-->CO
2
+ H
2
O
(B)
C
3
H
8
+5O
2
-->3CO
2
+4 H
2
O
(C)
CO
2
+ H
2
O-->C
3
H
8
+O
2
(D)
2C
3
H
8
+8O
2
-->6CO
2
+ 5H
2
O
Hint
Your response
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Question 2
Balance the equation for the combustion of butane C
4
H
10
(A)
C
4
H
10
+O
2
-->CO
2
+ H
2
O
(B)
C
4
H
10
+6.5O
2
-->4CO
2
+5 H
2
O
(C)
C
4
H
10
+7O
2
-->5CO
2
+ 8H
2
O
(D)
2C
4
H
10
+13O
2
-->8CO
2
+10 H
2
O
Hint
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Question 3
Balance the equation for the combustion of hydrogen.
(A)
H
2
+O
2
-->H
2
O
(B)
H
2
+O->H
2
O
(C)
2H
2
+O
2
-->2H
2
O
(D)
There is no carbon so this does not combust
Your response
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Question 4
Balance the equation for the combustion of magnesium.
(A)
Mg + O -->MgO
(B)
Mg + O
2
-->MgO
2
(C)
2Mg +O
2
-->2MgO
(D)
Magnesium will not combust
Your response
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Question 5
Balance the equation for the combustion of ethanol (CH
3
CH
2
OH - drinking alcohol).
(A)
CH
3
CH
2
OH +3 O
2
-->2CO
2
+3 H
2
O
(B)
2CH
3
CH
2
OH + 13O
2
-->4CO
2
+ 6H
2
O
(C)
CH
3
CH
2
OH + O
2
-->CO
2
+ H
2
O
(D)
3CH
3
CH
2
OH + 9O
2
-->6CO
2
+12 H
2
O
Hint
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Question 6
Balance the equation for the combustion of isopropyl alcohol - (CH
3
)
2
CHOH - rubbing alcohol.
(A)
(CH
3
)
2
CHOH +O
2
-->2CO
2
+3 H
2
O
(B)
2(CH
3
)
2
CHOH +9O
2
-->6CO
2
+8 H
2
O
(C)
(CH
3
)
2
CHOH +O
2
-->2CO
2
+3 H
2
O
(D)
(CH
3
)
2
CHOH +4.5O
2
-->3CO
2
+2 H
2
O
Hint
Your response
Not answered yet