The image shows the combustion of methane. Which equation represents this chemical reaction?
A.
CH4 + O2 → CO2 + H2O
B.
2CH4 + 2O2 → CO2 + 2H2O
C.
CH4 + 2O2 → 2CO2 + H2O
D.
CH4 + O2 → 2CO2 + 2 H2O
E.
CH4 + 2O2 → CO2 + 2H2O
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(opt.03)
Hydrocarbon fuels like methane (CH4) burn in the presence of oxygen to produce carbon dioxide and water. This process of combustion releases energy. When energy is released during the course of a chemical reaction, it is said to be an EXOTHERMIC reaction. The combustion of of methane gas releases 50.1 kJ/g.The combustion of methane is represented by the equation: CH4 + 2O2 → CO2 + 2H2O.
The main products formed in the oxidation of methane at 300-450° C are methyl alcohol, formaldehyde, formic acid, carbon monoxide, carbon dioxide and water (Bone and Wheeler 1903; Bone and Allum 1932).
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Answer: The answer is E
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