Post by Demonight on Dec 7, 2008 9:43:04 GMT -3
Wikipedia:
Highly-concentrated sources of oxygen promote rapid combustion. Fire and explosion hazards exist when concentrated oxidants and fuels are brought into close proximity; however, an ignition event, such as heat or a spark, is needed to trigger combustion.[105] Oxygen itself is not the fuel, but the oxidant. Combustion hazards also apply to compounds of oxygen with a high oxidative potential, such as peroxides, chlorates, nitrates, perchlorates, and dichromates because they can donate oxygen to a fire.
hospitalgeral.com.br/1_prof/adm_hosp/gases_med/gases.htm
Oxigênio (O2)
É um gás inodoro, insípido, e ocupa aproximadamente 20% do volume da atmosfera. O oxigênio não é inflamável, mas é um poderoso oxidante, causando queima vigorosa em materiais combustíveis. Tem diversas aplicações em sistemas de manutenção da vida, como nos casos de sufocamento e ataque cardíaco, em anestesia, no tratamento de problemas respiratórios, intoxicação por monóxido de carbono, gangrena gasosa e outras afecções. É fornecido em cilindros, com pressão entre 120 e 190 kgf/cm², na forma gasosa. Pode também se apresentar na forma líquida, para altos consumos.
Agora vamos ao Hidrogenio
Wikipedia:
Hydrogen gas (dihydrogen[9]) is highly flammable and will burn at concentrations of 4% or more H2 in air.[10] The enthalpy of combustion for hydrogen is −286 kJ/mol;[11] it burns according to the following balanced equation.
2 H2(g) + O2(g) → 2 H2O(l) + 572 kJ (286 kJ/mol)[12]
When mixed with oxygen across a wide range of proportions, hydrogen explodes upon ignition. Hydrogen burns violently in air. It ignites automatically at a temperature of 560 °C.[13] Pure hydrogen-oxygen flames burn in the ultraviolet color range and are nearly invisible to the naked eye, as illustrated by the faintness of flame from the main Space Shuttle engines (as opposed to the easily visible flames from the SRBs). Thus it requires a flame detector to detect if a hydrogen leak is burning. The explosion of the Hindenburg airship was an infamous case of hydrogen combustion; the cause is debated, but combustible materials in the ship's skin were responsible for the coloring of the flames.[14] Another characteristic of hydrogen fires is that the flames tend to ascend rapidly with the gas in air, as illustrated by the Hindenburg flames, causing less damage than hydrocarbon fires. Two-thirds of the Hindenburg passengers survived the fire, and many of the deaths which occurred were from falling or from diesel fuel burns.[15]
H2 reacts directly with other oxidizing elements. A violent and spontaneous reaction can occur at room temperature with chlorine and fluorine, forming the corresponding hydrogen halides: hydrogen chloride and hydrogen fluoride.[16]
Wikipedia:
The energy density per unit volume of both liquid hydrogen and compressed hydrogen gas at any practicable pressure is significantly less than that of traditional fuel sources, although the energy density per unit fuel mass is higher.[84] Nevertheless, elemental hydrogen has been widely discussed in the context of energy, as a possible future carrier of energy on an economy-wide scale.[87] For example, CO2 sequestration followed by carbon capture and storage could be conducted at the point of H2 production from fossil fuels.[88] Hydrogen used in transportation would burn relatively cleanly, with some NOx emissions,[89] but without carbon emissions.[88] However, the infrastructure costs associated with full conversion to a hydrogen economy would be substantial.[90]
Confirmando
OXIGENIO NAO EH INFLAMAVEL
OXIGENIO NAO EH COMBUSTIVEL
HIDROGENIO EH INFLAMAVEL
HIDROGENIO PODE SER UTILIZADO COMO COMBUSTIVEL
Se kizer mais informaçao entra no wikipedia ou procura no google, eu li o Wikipedia inteiro, e da pra afimar com 100% de que Oxigenio em si, NAO PEGA FOGO e NAO PODE SER UTILIZADO COMO COMBUSTIVEL, a mistura dele com outros materiais COMBUSTIVEIS aumenta sua potencia e durabilidade.
Pra finalizar
Oxigenio é comburente e Hidrogenio é combustivel
Highly-concentrated sources of oxygen promote rapid combustion. Fire and explosion hazards exist when concentrated oxidants and fuels are brought into close proximity; however, an ignition event, such as heat or a spark, is needed to trigger combustion.[105] Oxygen itself is not the fuel, but the oxidant. Combustion hazards also apply to compounds of oxygen with a high oxidative potential, such as peroxides, chlorates, nitrates, perchlorates, and dichromates because they can donate oxygen to a fire.
hospitalgeral.com.br/1_prof/adm_hosp/gases_med/gases.htm
Oxigênio (O2)
É um gás inodoro, insípido, e ocupa aproximadamente 20% do volume da atmosfera. O oxigênio não é inflamável, mas é um poderoso oxidante, causando queima vigorosa em materiais combustíveis. Tem diversas aplicações em sistemas de manutenção da vida, como nos casos de sufocamento e ataque cardíaco, em anestesia, no tratamento de problemas respiratórios, intoxicação por monóxido de carbono, gangrena gasosa e outras afecções. É fornecido em cilindros, com pressão entre 120 e 190 kgf/cm², na forma gasosa. Pode também se apresentar na forma líquida, para altos consumos.
Agora vamos ao Hidrogenio
Wikipedia:
Hydrogen gas (dihydrogen[9]) is highly flammable and will burn at concentrations of 4% or more H2 in air.[10] The enthalpy of combustion for hydrogen is −286 kJ/mol;[11] it burns according to the following balanced equation.
2 H2(g) + O2(g) → 2 H2O(l) + 572 kJ (286 kJ/mol)[12]
When mixed with oxygen across a wide range of proportions, hydrogen explodes upon ignition. Hydrogen burns violently in air. It ignites automatically at a temperature of 560 °C.[13] Pure hydrogen-oxygen flames burn in the ultraviolet color range and are nearly invisible to the naked eye, as illustrated by the faintness of flame from the main Space Shuttle engines (as opposed to the easily visible flames from the SRBs). Thus it requires a flame detector to detect if a hydrogen leak is burning. The explosion of the Hindenburg airship was an infamous case of hydrogen combustion; the cause is debated, but combustible materials in the ship's skin were responsible for the coloring of the flames.[14] Another characteristic of hydrogen fires is that the flames tend to ascend rapidly with the gas in air, as illustrated by the Hindenburg flames, causing less damage than hydrocarbon fires. Two-thirds of the Hindenburg passengers survived the fire, and many of the deaths which occurred were from falling or from diesel fuel burns.[15]
H2 reacts directly with other oxidizing elements. A violent and spontaneous reaction can occur at room temperature with chlorine and fluorine, forming the corresponding hydrogen halides: hydrogen chloride and hydrogen fluoride.[16]
Wikipedia:
The energy density per unit volume of both liquid hydrogen and compressed hydrogen gas at any practicable pressure is significantly less than that of traditional fuel sources, although the energy density per unit fuel mass is higher.[84] Nevertheless, elemental hydrogen has been widely discussed in the context of energy, as a possible future carrier of energy on an economy-wide scale.[87] For example, CO2 sequestration followed by carbon capture and storage could be conducted at the point of H2 production from fossil fuels.[88] Hydrogen used in transportation would burn relatively cleanly, with some NOx emissions,[89] but without carbon emissions.[88] However, the infrastructure costs associated with full conversion to a hydrogen economy would be substantial.[90]
Confirmando
OXIGENIO NAO EH INFLAMAVEL
OXIGENIO NAO EH COMBUSTIVEL
HIDROGENIO EH INFLAMAVEL
HIDROGENIO PODE SER UTILIZADO COMO COMBUSTIVEL
Se kizer mais informaçao entra no wikipedia ou procura no google, eu li o Wikipedia inteiro, e da pra afimar com 100% de que Oxigenio em si, NAO PEGA FOGO e NAO PODE SER UTILIZADO COMO COMBUSTIVEL, a mistura dele com outros materiais COMBUSTIVEIS aumenta sua potencia e durabilidade.
Pra finalizar
Oxigenio é comburente e Hidrogenio é combustivel
