Core
Reactions: Acid-base
Slide 4 of 42
Preamble: Chemical Reactions
2. Combustion
Combustion reaction is reaction between a substance (element or
compound) and oxygen.
This is essentially the reaction that takes place when a
substance burns in air.
Combustion reaction is the source of most of the energy we
use.
–Combustion
of natural gas (methane) is the reaction that release heat energy used in
cooking food.
–Combustion
of petrol is the reaction that take place in the engine of a motor vehicle
the energy evolved driving it.
The product(s) of combustion of an element is always the oxide
of the element.
Mg(s)
+ O2(g)
à MgO(s)
S(s)
+ O2(g)
à SO2(g)
C(s)
+ O2(g)
à CO2(g)
N2(g)
+ O2(g)
à NO(g)