Combustion of Hydrogen Gas

2H2 + O2 → 2H2O

Visão geral

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

Papel Substância Coeficiente Estado
Reagente Oxygen O 1 (g)
Reagente Hydrogen H 2 (g)
Produto Water H₂O 2 (l)

Exemplo do cotidiano

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

Importância industrial

A combustão do hidrogénio é central na economia do hidrogénio para energia limpa. Alimenta motores de foguetão (o motor principal do Space Shuttle utilizava H₂/O₂ líquidos) e células de combustível.

Propriedades

Tipo
Combustion
Reversível
Não
Energia
Exotérmico
ΔH
-571,6 kJ/mol

Reações relacionadas

Combustion of Carbon Monoxide Combustion of Ethylene Combustion of Glycerol Combustion of Methanol Combustion of Phenol Combustion of Naphthalene Combustion of Methane Combustion of Octane (Gasoline) Combustion of Cyclohexane Combustion of Benzene

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.