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Suggest why this experimental value is less than the standard enthalpy change of combustion of hexane found in a data book

Respuesta :

The standard enthalpy change of combustion of hexane is greater than the experimental value because  the combustion of hydrocarbons is not always complete.

What is enthalpy of combustion?

The term standard enthalpy of combustion is used to described the heat evolved upon burning one mole of a substance in oxygen under standard conditions.

We must recall that the combustion of hydrocarbons is not always complete as such, the standard enthalpy change of combustion of hexane is greater than the experimental value.

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