Hydrogen - Revision history

Froggx: infobox gas edits: rounded temperatures to 2 decimal places for readability and added Celsius values. "Max Liquid Temperature" needs to be formatted as "(Temperature) at (Pressure)" rather than the other way around because the most important value listed in that entry is the temperature.

2026-07-31T20:40:41Z

infobox gas edits: rounded temperatures to 2 decimal places for readability and added Celsius values. "Max Liquid Temperature" needs to be formatted as "(Temperature) at (Pressure)" rather than the other way around because the most important value listed in that entry is the temperature.

← Older revision		Revision as of 20:40, 31 July 2026
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	\| heat = {{Gas/Property\|Hydrogen\|SpecificHeat}} J/mol*K		\| heat = {{Gas/Property\|Hydrogen\|SpecificHeat}} J/mol*K
	\| latent_heat = {{Gas/Property\|Hydrogen\|LatentHeat}} J/mol		\| latent_heat = {{Gas/Property\|Hydrogen\|LatentHeat}} J/mol
	\| minimum_condensation = {{Gas/Property\|Hydrogen\|TriplePressure}} kPa at ~~{{Gas/Property\|Hydrogen\|FreezingTemperature}}~~ K		\| minimum_condensation = {{Gas/Property\|Hydrogen\|TriplePressure}} kPa at 15.18 K (-257.97 °C)
	\| max_liquid = {{Gas/Property\|Hydrogen\|CriticalPressure}} kPa ~~at {{Gas/Property\|Hydrogen\|CriticalTemperature}} K~~		\| max_liquid = 70.06 K (-203.09 °C) at {{Gas/Property\|Hydrogen\|CriticalPressure}} kPa
	\| freezes = ~~{{Gas/Property\|Hydrogen\|FreezingTemperature}}~~ K		\| freezes = 15.18 K (-257.97 °C)
	\| coefficient_a = {{Gas/Property\|Hydrogen\|A}}		\| coefficient_a = {{Gas/Property\|Hydrogen\|A}}
	\| coefficient_b = {{Gas/Property\|Hydrogen\|B}}		\| coefficient_b = {{Gas/Property\|Hydrogen\|B}}

RA2lover: fix image on infobox by reverting changes to its link

2026-07-24T20:24:58Z

fix image on infobox by reverting changes to its link

← Older revision		Revision as of 20:24, 24 July 2026
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	{{Infobox gas		{{Infobox gas
	\| gas_name = Hydrogen		\| gas_name = Hydrogen
	\| image = ~~{{Gas/Property\|~~Hydrogen~~\|Image}}~~		\| image = Icon-Hydrogen.png
	\| heat = {{Gas/Property\|Hydrogen\|SpecificHeat}} J/mol*K		\| heat = {{Gas/Property\|Hydrogen\|SpecificHeat}} J/mol*K
	\| latent_heat = {{Gas/Property\|Hydrogen\|LatentHeat}} J/mol		\| latent_heat = {{Gas/Property\|Hydrogen\|LatentHeat}} J/mol

RA2lover: Stress-test Template:Gas/Property by making the template pull properties from it where appropriate

2026-07-24T20:23:26Z

Stress-test Template:Gas/Property by making the template pull properties from it where appropriate

← Older revision		Revision as of 20:23, 24 July 2026
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	{{Infobox gas		{{Infobox gas
	\| gas_name = Hydrogen		\| gas_name = Hydrogen
	\| image = ~~Icon-~~Hydrogen~~.png~~		\| image = {{Gas/Property\|Hydrogen\|Image}}
	\| heat = ~~20.4~~ J/mol*K ~~<!-- Atmospherics.Mole::GetSpecificHeat -->~~		\| heat = {{Gas/Property\|Hydrogen\|SpecificHeat}} J/mol*K
	\| latent_heat = ~~200~~ J/mol ~~<!-- Atmospherics.Mole::LatentHeatOfVaporization -->~~		\| latent_heat = {{Gas/Property\|Hydrogen\|LatentHeat}} J/mol
	\| minimum_condensation = ~~6.3~~ kPa at ~~15.1767057463~~ K ~~<!-- Atmospherics.Mole::FreezingTemperature -->~~		\| minimum_condensation = {{Gas/Property\|Hydrogen\|TriplePressure}} kPa at {{Gas/Property\|Hydrogen\|FreezingTemperature}} K
	\| max_liquid = ~~6000~~ kPa at ~~70.0551551908~~ K ~~<!-- Atmospherics.Mole::MaxLiquidTemperature -->~~		\| max_liquid = {{Gas/Property\|Hydrogen\|CriticalPressure}} kPa at {{Gas/Property\|Hydrogen\|CriticalTemperature}} K
	\| freezes = ~~15.1767057463~~ K		\| freezes = {{Gas/Property\|Hydrogen\|FreezingTemperature}} K
	\| coefficient_a = ~~3.18041E-05~~		\| coefficient_a = {{Gas/Property\|Hydrogen\|A}}
	\| coefficient_b = ~~4.4843872973~~		\| coefficient_b = {{Gas/Property\|Hydrogen\|B}}
	\| thermal_efficiency = ~~0.18~~		\| thermal_efficiency = {{Gas/Property\|Hydrogen\|ThermalEfficiency}}
	\| enthalpy = ~~306~~ kJ / mol		\| enthalpy = {{Gas/Property\|Hydrogen\|Enthalpy}} kJ / mol
	\| liquid_volume = 28 L/~~kmol~~		\| liquid_volume = {{Gas/Property\|LiquidHydrogen\|MolarVolume}} L/mol
	\| molar_mass = 2 g/mol		\| molar_mass = {{Gas/Property\|Hydrogen\|MolarMass}} g/mol
	\| heat_capacity_ratio = ~~1.4 <!--unchecked, but H2 should be 7~~/~~5 as other diatomics-->~~		\| heat_capacity_ratio = {{Gas/Property\|Hydrogen\|HeatCapacityRatio}}
	}}		}}

	[[File:Phase Diagram of Hydrogen.png\|thumb\|Phase Diagram of Hydrogen]]		[[File:Phase Diagram of Hydrogen.png\|thumb\|Phase Diagram of Hydrogen]]


	{{Stationpedia\|Hydrogen is the most efficient fuel by weight for [[rocketry]]. When mixed with [[Oxygen]] it will cleanly combust into [[Water\|Steam]].}}		{{Stationpedia\|Hydrogen is the most efficient fuel by weight for [[rocketry]]. When mixed with [[Oxygen]] it will cleanly combust into [[Water\|Steam]].}}

	== Description ==		== Description ==
	'''Hydrogen''' or '''H<sub>2</sub>''' is a combustible gas. The main source of Hydrogen on most [[planets]] is in the form of [[Ice (Volatiles)]] that can be mined on the surface. Hydrogen will autoignite at ~~300°C~~ or above in the presence of [[Oxygen]], autoignite at 150°C in the presence of [[Ozone]] and autoignite at 50°C in the presence of [[Nitrous Oxide]].		'''Hydrogen''' or '''H<sub>2</sub>''' is a combustible gas. The main source of Hydrogen on most [[planets]] is in the form of [[Ice (Volatiles)]] that can be mined on the surface. Hydrogen will autoignite at {{Temperature\|Temperature={{Gas/Property\|Hydrogen\|AutoignitionTemperature}}}} or above in the presence of [[Oxygen]], autoignite at 150°C in the presence of [[Ozone]] and autoignite at 50°C in the presence of [[Nitrous Oxide]].

	=== Combustion ===		=== Combustion ===
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	===Notes===		===Notes===
	* The Specific heat of ~~20.4~~ Joule / mol is in-between the specific heat of Hydrogen and Methane in real-life.		* The Specific heat of {{Gas/Property\|Hydrogen\|SpecificHeat}} Joule / mol is in-between the specific heat of Hydrogen and Methane in real-life.
	* The actual Autoignition temperature of Hydrogen in Oxygen is approximately 570 °C at 1 atm, decreasing to 414°C at 7.4 MPa.		* The actual Autoignition temperature of Hydrogen in Oxygen is approximately 570 °C at 1 atm, decreasing to 414°C at 7.4 MPa.
	* Unlike [[Methane]], Hydrogen is not toxic to most [[plants]] in-game.		* Unlike [[Methane]], Hydrogen is not toxic to most [[plants]] in-game.
	* As far as rocketry is concerned, Hydrogen has a mass of 500 mol/kg (2 g/mol).		* As far as rocketry is concerned, Hydrogen has a mass of 500 mol/kg ({{Gas/Property\|Hydrogen\|MolarMass}} g/mol).

	==Sources==		==Sources==
	Hydrogen can be obtained by processing [[Water]] in an [[Electrolyzer]] or acquired from [[traders]]		Hydrogen can be obtained by processing [[Water]] in an [[Electrolyzer]] or acquired from [[traders]] and rocket mining.<br>Additionally, Hydrogen can be collected from the following sources:
	and ~~rocketry~~.<br>Additionally, Hydrogen can be collected from the following sources:

	{\| class="wikitable"		{\| class="wikitable"

Crazy lemmon: Saw it in my game

2026-04-26T01:47:58Z

Saw it in my game

← Older revision		Revision as of 01:47, 26 April 2026
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	==Sources==		==Sources==
	Hydrogen can be obtained by processing [[Water]] in an [[Electrolyzer]] or acquired from [[traders]].		Hydrogen can be obtained by processing [[Water]] in an [[Electrolyzer]] or acquired from [[traders]]
	<br>Additionally, Hydrogen can be collected from the following sources:		and rocketry.<br>Additionally, Hydrogen can be collected from the following sources:

	{\| class="wikitable"		{\| class="wikitable"

Azera: Migrate block quote to Stationpedia quote template

2026-04-07T00:38:32Z

Migrate block quote to Stationpedia quote template

← Older revision		Revision as of 00:38, 7 April 2026
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	[[File:Phase Diagram of Hydrogen.png\|thumb\|Phase Diagram of Hydrogen]]		[[File:Phase Diagram of Hydrogen.png\|thumb\|Phase Diagram of Hydrogen]]


			{{Stationpedia\|Hydrogen is the most efficient fuel by weight for [[rocketry]]. When mixed with [[Oxygen]] it will cleanly combust into [[Water\|Steam]].}}

	== Description ==		== Description ==
	~~<blockquote><q>Hydrogen is the most efficient fuel by weight for [[rocketry]]. When mixed with [[Oxygen]] it will cleanly combust into [[Water\|Steam]].</q><br>~~
	~~'''- [[Stationpedia]]'''</blockquote>~~

	'''Hydrogen''' or '''H<sub>2</sub>''' is a combustible gas. The main source of Hydrogen on most [[planets]] is in the form of [[Ice (Volatiles)]] that can be mined on the surface. Hydrogen will autoignite at 300°C or above in the presence of [[Oxygen]], autoignite at 150°C in the presence of [[Ozone]] and autoignite at 50°C in the presence of [[Nitrous Oxide]].		'''Hydrogen''' or '''H<sub>2</sub>''' is a combustible gas. The main source of Hydrogen on most [[planets]] is in the form of [[Ice (Volatiles)]] that can be mined on the surface. Hydrogen will autoignite at 300°C or above in the presence of [[Oxygen]], autoignite at 150°C in the presence of [[Ozone]] and autoignite at 50°C in the presence of [[Nitrous Oxide]].

Jebadiha: Added Phase Diagram

2026-03-26T04:38:14Z

Added Phase Diagram

← Older revision		Revision as of 04:38, 26 March 2026
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	\| heat_capacity_ratio = 1.4 <!--unchecked, but H2 should be 7/5 as other diatomics-->		\| heat_capacity_ratio = 1.4 <!--unchecked, but H2 should be 7/5 as other diatomics-->
	}}		}}

			[[File:Phase Diagram of Hydrogen.png\|thumb\|Phase Diagram of Hydrogen]]

	== Description ==		== Description ==

RA2lover: /* Notes */ remove link to volatiles

2026-03-19T07:55:19Z

Notes: remove link to volatiles

← Older revision		Revision as of 07:55, 19 March 2026
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	* The actual Autoignition temperature of Hydrogen in Oxygen is approximately 570 °C at 1 atm, decreasing to 414°C at 7.4 MPa.		* The actual Autoignition temperature of Hydrogen in Oxygen is approximately 570 °C at 1 atm, decreasing to 414°C at 7.4 MPa.
	* Unlike [[Methane]], Hydrogen is not toxic to most [[plants]] in-game.		* Unlike [[Methane]], Hydrogen is not toxic to most [[plants]] in-game.
	* As far as rocketry is concerned, ~~[[Volatiles]] have~~ a mass of 500 mol/kg.		* As far as rocketry is concerned, Hydrogen has a mass of 500 mol/kg (2 g/mol).

	==Sources==		==Sources==

RA2lover: /* Combustion */

2026-03-16T22:44:36Z

Combustion

← Older revision		Revision as of 22:44, 16 March 2026
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	* {{Combustion\|Fuel=Hydrogen, 2\|Oxidizer=Oxygen, 1\|OutputA=Steam, 3\|ShowAutoignition=true}}		* {{Combustion\|Fuel=Hydrogen, 2\|Oxidizer=Oxygen, 1\|OutputA=Steam, 3\|ShowAutoignition=true}}
	* {{Combustion\|Fuel=Hydrogen, 1\|Oxidizer=Nitrous Oxide, 1\|OutputA=Steam, 1\|OutputB=Nitrogen, 1\|ShowAutoignition=true}}		* {{Combustion\|Fuel=Hydrogen, 1\|Oxidizer=Nitrous Oxide, 1\|OutputA=Steam, 1\|OutputB=Nitrogen, 1\|ShowAutoignition=true}}
	{{Combustion\|Fuel=Hydrogen, 3\|Oxidizer=Ozone, 1\|OutputA=Steam, 4\|ShowAutoignition=true}}		* {{Combustion\|Fuel=Hydrogen, 3\|Oxidizer=Ozone, 1\|OutputA=Steam, 4\|ShowAutoignition=true}}

	== Usage ==		== Usage ==
	''See also: [[Fuel]]''		''See also: [[Fuel]]''

RA2lover: Move to combustion template, add trader source

2026-03-16T22:44:15Z

Move to combustion template, add trader source

← Older revision		Revision as of 22:44, 16 March 2026
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	== Description ==		== Description ==
	<blockquote><q>Hydrogen is the most efficient fuel by weight for rocketry. When mixed with [[Oxygen]] it will cleanly combust into [[Water\|Steam]].</q><br>		<blockquote><q>Hydrogen is the most efficient fuel by weight for [[rocketry]]. When mixed with [[Oxygen]] it will cleanly combust into [[Water\|Steam]].</q><br>
	'''- Stationpedia'''</blockquote>		'''- [[Stationpedia]]'''</blockquote>

	'''Hydrogen''' or '''H<sub>2</sub>''' is a combustible gas. The main source of Hydrogen on most planets is in the form of [[Ice (Volatiles)]] that can be mined on the surface. Hydrogen will autoignite at 300°C or above in the presence of [[Oxygen]], autoignite at 150°C in the presence of [[Ozone]] and autoignite at 50°C in the presence of [[Nitrous Oxide]].		'''Hydrogen''' or '''H<sub>2</sub>''' is a combustible gas. The main source of Hydrogen on most [[planets]] is in the form of [[Ice (Volatiles)]] that can be mined on the surface. Hydrogen will autoignite at 300°C or above in the presence of [[Oxygen]], autoignite at 150°C in the presence of [[Ozone]] and autoignite at 50°C in the presence of [[Nitrous Oxide]].

	=== Combustion ===		=== Combustion ===
	* 2 ~~mol H2 +~~ 1 ~~mol O2~~ = 3 ~~mol H2O + 612 kJ (autoignition at 300°C)~~		* {{Combustion\|Fuel=Hydrogen, 2\|Oxidizer=Oxygen, 1\|OutputA=Steam, 3\|ShowAutoignition=true}}
	* 1 ~~mol H2 +~~ 1 ~~mol N2O~~ = 1 ~~mol H2O +~~ 1 ~~mol N2 + 612 kJ (Autoignition at 50°C)~~		* {{Combustion\|Fuel=Hydrogen, 1\|Oxidizer=Nitrous Oxide, 1\|OutputA=Steam, 1\|OutputB=Nitrogen, 1\|ShowAutoignition=true}}
	* 3 ~~mol H2 +~~ 1 ~~mol O3~~ = 4 ~~mol H2O + 1836? kJ (Autoignition at 150°C) <!--Stationpedia equation is not balanced, check actual combustion code later-->~~		{{Combustion\|Fuel=Hydrogen, 3\|Oxidizer=Ozone, 1\|OutputA=Steam, 4\|ShowAutoignition=true}}

	== Usage ==		== Usage ==
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	* The Specific heat of 20.4 Joule / mol is in-between the specific heat of Hydrogen and Methane in real-life.		* The Specific heat of 20.4 Joule / mol is in-between the specific heat of Hydrogen and Methane in real-life.
	* The actual Autoignition temperature of Hydrogen in Oxygen is approximately 570 °C at 1 atm, decreasing to 414°C at 7.4 MPa.		* The actual Autoignition temperature of Hydrogen in Oxygen is approximately 570 °C at 1 atm, decreasing to 414°C at 7.4 MPa.
	* Unlike [[Methane]], Hydrogen is not toxic to most plants in-game.		* Unlike [[Methane]], Hydrogen is not toxic to most [[plants]] in-game.
	* As far as rocketry is concerned, Volatiles have a mass of 500 mol/kg.		* As far as rocketry is concerned, [[Volatiles]] have a mass of 500 mol/kg.

	==Sources==		==Sources==
	Hydrogen can be obtained by processing [[Water]] in an [[Electrolyzer]].		Hydrogen can be obtained by processing [[Water]] in an [[Electrolyzer]] or acquired from [[traders]].
	<br>Additionally, Hydrogen can be collected from the following sources:		<br>Additionally, Hydrogen can be collected from the following sources:

RA2lover: Fix icon

2026-03-13T02:15:38Z

Fix icon

← Older revision		Revision as of 02:15, 13 March 2026
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	{{Infobox gas		{{Infobox gas
	\| gas_name = Hydrogen		\| gas_name = Hydrogen
	\| image = Icon-~~hydrogen~~.png		\| image = Icon-Hydrogen.png
	\| heat = 20.4 J/mol*K <!-- Atmospherics.Mole::GetSpecificHeat -->		\| heat = 20.4 J/mol*K <!-- Atmospherics.Mole::GetSpecificHeat -->
	\| latent_heat = 200 J/mol <!-- Atmospherics.Mole::LatentHeatOfVaporization -->		\| latent_heat = 200 J/mol <!-- Atmospherics.Mole::LatentHeatOfVaporization -->

← Older revision		Revision as of 20:40, 31 July 2026
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	\| heat = {{Gas/Property\|Hydrogen\|SpecificHeat}} J/mol*K		\| heat = {{Gas/Property\|Hydrogen\|SpecificHeat}} J/mol*K
	\| latent_heat = {{Gas/Property\|Hydrogen\|LatentHeat}} J/mol		\| latent_heat = {{Gas/Property\|Hydrogen\|LatentHeat}} J/mol
	\| minimum_condensation = {{Gas/Property\|Hydrogen\|TriplePressure}} kPa at ~~{{Gas/Property\|Hydrogen\|FreezingTemperature}}~~ K		\| minimum_condensation = {{Gas/Property\|Hydrogen\|TriplePressure}} kPa at 15.18 K (-257.97 °C)
	\| max_liquid = {{Gas/Property\|Hydrogen\|CriticalPressure}} kPa ~~at {{Gas/Property\|Hydrogen\|CriticalTemperature}} K~~		\| max_liquid = 70.06 K (-203.09 °C) at {{Gas/Property\|Hydrogen\|CriticalPressure}} kPa
	\| freezes = ~~{{Gas/Property\|Hydrogen\|FreezingTemperature}}~~ K		\| freezes = 15.18 K (-257.97 °C)
	\| coefficient_a = {{Gas/Property\|Hydrogen\|A}}		\| coefficient_a = {{Gas/Property\|Hydrogen\|A}}
	\| coefficient_b = {{Gas/Property\|Hydrogen\|B}}		\| coefficient_b = {{Gas/Property\|Hydrogen\|B}}