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Combustion

Subject

Chemistry

Type

Study Guide

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Combustion Reaction
Combustion usually occurs when a hydrocarbon reacts with oxygen to
produce carbon dioxide and water.
Combustion involves a reaction between any combustible material and
an oxidizer to form an oxidized product.
Combustion is an exothermic reaction, so it releases heat, but
sometimes the reaction proceeds so slowly that a temperature change is
not noticeable.
Usually combustion reaction include oxygen as a reactant and carbon
dioxide,
water and heat as products.
General Form of a Combustion Reaction
hydrocarbon + oxygen → carbon dioxde + water
Examples of Combustion Reactions
combustion of methane
CH
4
(g) + 2 O
2
(g) → CO
2
(g) + 2 H
2
O(g)
burning of naphthalene
C
10
H
8
+ 12 O
2
→ 10 CO
2
+ 4 H
2
O
combustion of ethane
2 C
2
H
6
+ 7 O
2
→ 4 CO
2
+ 6 H
2
O
prefix
meth-
eth-
prop-

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but-
pent-
hex-
hept-
oct-
non-
dec-
Examples
C
2
H
6
is ethane
C
3
H
8
is propane
C
8
H
18
is octane
Alkenes have an –ene ending with double bonds. Drop the –ane
Alkynes have an –yne ending with triple bonds.
Drop the –ane and add the –yne.
Naming hydrocarbons
alkanes C
n
H
2n+2
-ane Single bonds CH
4
alkenes C
n
H
2n
-ene Double
bonds
C
2
H
4
alkynes C
n
H
2n-n
-yne Triple bonds C
4
H
6

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