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Why does the oxidation of organic compounds by molecular oxygen to produce CO₂ and water release free energy?
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Marla Robinson
Why does the oxidation of organic compounds by molecular oxygen to produce CO₂ and water release free energy?
The bigger the molecular weight the greater free energy released ∆G=∆H-∆T∆S. The cause relies in all the C-C and C-H bonds that break to make smaller molecules like CO; CO2 and H2O throwing a negative enthalpy balance ∆H<0 and on the other hand the increase in entropy ∆S>0 due to more molecules being made, greater disorder and degrees of freedom in the system. This situation of ∆G<0 we call spontaneity and most organic compounds have “spontaneous combustion”, but temperature stablishes a kinetic barrier so we have what we call a “flash point” which we use for safety remarks and “ignition point” for fuel applications, organic compounds in pure state and its blends must br catalogued in this protocol.
The bigger the molecular weight the greater free energy released ∆G=∆H-∆T∆S. The cause relies in all the C-C and C-H bonds that break to make smaller molecules like CO; CO2 and H2O throwing a negative enthalpy balance ∆H<0 and on the other hand the increase in entropy ∆S>0 due to more molecules being made, greater disorder and degrees of freedom in the system. This situation of ∆G<0 we call spontaneity and most organic compounds have “spontaneous combustion”, but temperature stablishes a kinetic barrier so we have what we call a “flash point” which we use for safety remarks and “ignition point” for fuel applications, organic compounds in pure state and its blends must br catalogued in this protocol.
The bigger the molecular weight the greater free energy released ∆G=∆H-∆T∆S. The cause relies in all the C-C and C-H bonds that break to make smaller molecules like CO; CO2 and H2O throwing a negative enthalpy balance ∆H<0 and on the other hand the increase in entropy ∆S>0 due to more molecules being made, greater disorder and degrees of freedom in the system. This situation of ∆G<0 we call spontaneity and most organic compounds have “spontaneous combustion”, but temperature stablishes a kinetic barrier so we have what we call a “flash point” which we use for safety remarks and “ignition point” for fuel applications, organic compounds in pure state and its blends must br catalogued in this protocol.
The bigger the molecular weight the greater free energy released ∆G=∆H-∆T∆S. The cause relies in all the C-C and C-H bonds that break to make smaller molecules like CO; CO2 and H2O throwing a negative enthalpy balance ∆H<0 and on the other hand the increase in entropy ∆S>0 due to more molecules being made, greater disorder and degrees of freedom in the system. This situation of ∆G<0 we call spontaneity and most organic compounds have “spontaneous combustion”, but temperature stablishes a kinetic barrier so we have what we call a “flash point” which we use for safety remarks and “ignition point” for fuel applications, organic compounds in pure state and its blends must br catalogued in this protocol.
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