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Calculate the heat of combustion of hydrogen gas

작성자 Uploader : sunflower 작성일 Upload Date: 2019-11-09변경일 Update Date: 2023-05-08조회수 View : 77

The thermochemical reaction equation of hydrogen gas and oxygen gas is as follows.

2H2 (g) + O2 (g) → 2H2O (l) ΔH = -572 kJ

ΔH: reaction enthalpy (+: endothermic reaction, -: exothermic reaction)

The above formula means that 2 moles of hydrogen gas burns with 1 mole of oxygen gas to make 2 moles of water (liquid), releasing 572 kJ of energy.

If the mass of hydrogen gas used in the reaction is MH2 (g), the number of moles of hydrogen mH2 (mol) can be obtained by dividing it by the molecular weight of hydrogen MwH2.

mH2 = MH2/MwH2

Therefore, the combustion heat amount according to the mass of hydrogen gas can be obtained as follows.

E = mH2 * ΔH/2 = MH2/MwH2 * ΔH/2

*** 참고문헌[References] ***

https://en.wikipedia.org/wiki/Hydrogen

E = MH2/MwH2 * ΔH/2

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현재 위치

Calculate the heat of combustion of hydrogen gas

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