13.50 detemine the enthalply of combustion for gaseous butane in kj per kmol of fuel and kj per kg of fuel at 25 c, 1 atm, assuming a) water vapor in the products b) liquid water in the products

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24-11-2022
Engineering

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13.50 detemine the enthalply of combustion for gaseous butane in kj per kmol of fuel and kj per kg of fuel at 25 c, 1 atm, assuming a) water vapor in the products b) liquid water in the products

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AyushiJain10 AyushiJain10 · Answer 1 · 2022-12-02T09:48:21+01:00

a) The combustion enthalpy of gaseous butane at 25°c, 1 atm, when water is in vapor form is 2.657 × 10⁶ kJ/kmol and 45,810 in kJ/kg

b)The combustion enthalpy of gaseous butane at 25°c, 1 atm, when water is in liquid form is 2.877 × 10⁶ kJ/kmol and 49,603 in kJ/kg

What is combustion enthalpy?

Enthalpy of combustion is the change in enthalpy that results from a substance burning completely with oxygen in one mole of a thermodynamic system.

A thermodynamic system's enthalpy, which is one of its properties, is calculated as the product of the volume and pressure of the system and its internal energy.

It is a state function that is conveniently provided by the sizable ambient atmosphere, and is used in numerous measurements in chemical, biological, and physical systems at a constant pressure.

The pressure-volume term encapsulates the effort necessary to define the system's physical dimensions, i.e., to create space for it by dislodging its surroundings. For solids and liquids under typical conditions, the pressure-volume term is very small; for gases, it is only modest.

Learn more about Enthalpy

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