Oxygen (O2)
A reactive element, rare as O2 (except on Earth) but compounds of oxygen are very common throughout the Solar System.
Melting Point (at 101 kPa): 54.7 K
Vapor pressure of Solid at Melting Point: 26 Pa
Triple Point: 54.4 K at 152 Pa
Critical Temperature: 154.6 K
Critical Pressure: 5.08 MPa
Liquid Density at Boiling Point: 1142 kg/m3
Reactivity Table: Only reactions exoergic at normal temperatures(<300 K) considered.
|
Rxn with: |
H2O |
O2 |
CH4 |
NH3 |
H2S |
HF |
HCl |
H2 |
N2 |
|
Possible: |
N |
N/A |
Y |
Y |
Y |
N |
? |
Y |
N |
|
Rxn with: |
C |
CO2 |
Fe |
FeS |
MgSiO3 |
SiO2 |
NaCl |
CaSO4 |
Al2O3 |
|
Possible: |
Y |
N |
Y |
Y |
N |
N |
N |
N |
N |
Abundance in the Solar System:
|
Body: |
The Moon |
Mars |
Venus |
Asteroids |
Jup/Saturn |
|
Presence: |
None |
Traces |
Uncertain |
None |
None |
|
Body: |
Ganymede |
Europa |
Titan |
Ur/Neptune |
Triton |
|
Presence: |
None |
None |
None |
None |
None |
Uses:
Respiration
Propellant/Fuel (oxidiser)
Oxidising agent
Likely Sources:
H2O, CO2
Photosynthesis
Metal oxides (eg Fe2O3)
Metal oxoanion salts (eg FeTiO3)
Metal Silicates
Likely Methods of Preparation:
Electrolysis of H2O, CO2
Electrolysis of molten ilmenite (FeTiO3) or silicates
Last updated 8th April 2003.
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