Combustion of Hydrogen Gas

2H2 + O2 → 2H2O

Descripción general

Hydrogen gas burns in oxygen to produce water with no carbon-containing products. This makes hydrogen the ultimate clean fuel. The reaction produces a very hot, nearly invisible flame. Hydrogen-oxygen mixtures are explosive within a wide flammability range (4-75% H2 in air).

Participantes

Rol Sustancia Coeficiente Estado
Reactivo Oxygen O 1 (g)
Reactivo Hydrogen H 2 (g)
Producto Water H₂O 2 (l)

Ejemplo cotidiano

Hydrogen fuel cell vehicles like the Toyota Mirai emit only water vapor from the tailpipe, as the hydrogen effectively combusts electrochemically.

Importancia industrial

La combustión del hidrógeno es central en la economía del hidrógeno para energía limpia. Propulsa motores de cohetes (el motor principal del transbordador espacial utilizaba H₂/O₂ líquido) y pilas de combustible.

Propiedades

Tipo
Combustion
Reversible
No
Energía
Exotérmico
ΔH
-571,6 kJ/mol

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Frequently Asked Questions

What is the equation for Combustion of Hydrogen Gas?
The balanced equation is: 2H₂ + O₂ → 2H₂O.
What type of reaction is Combustion of Hydrogen Gas?
Combustion of Hydrogen Gas is a combustion reaction.
Is Combustion of Hydrogen Gas exothermic or endothermic?
Combustion of Hydrogen Gas is exothermic (releases energy). The enthalpy change (ΔH) is -571.6 kJ/mol.