2007-02-01 17:07:49 · 9 answers · asked by Karlos 1 in Science & Mathematics ➔ Chemistry
Cool or pressurize them.
2007-02-01 17:15:48 · answer #1 · answered by Anonymous · 0⤊ 1⤋
Oxygen and Hydrogen are gases at room temperature and require sophisticated equipment (multistage refrigeration and adiabatic cooling) to be liquified. Hydrogen is especially difficult to liquify but has been done. They need special storage devices for storage. The whole field dealing with ultralow temperatures is called cryogenics.
2007-02-02 01:18:41 · answer #2 · answered by Swamy 7 · 0⤊ 0⤋
The cooling process is complex.
Hydrogen liquid boils at -252 °C (21°K).
= -423°F (37 Rankine) at atmospheric pressure.
Will not become liquid until -240 °C and 13 atmospheres pressure. (Critical Temperature & Pressure).
Oxygen liquid boils at -183°C (90°K).
= -297°F (163°R) at atmospheric pressure.
Critical temperature -119°C (154°K)
Critical pressure = 50 Atmos.
2007-02-02 06:18:28 · answer #3 · answered by Norrie 7 · 1⤊ 0⤋
By cooling Hydrogen to -252 degrees Celsius it will condense to a liquid.
At -259 degrees Celsius it will freeze to a solid.
By cooling Oxygen to -183 degrees Celsius it will condense to a liquid.
At -218 degrees Celsius it will freeze to a solid.
The industrial process is done by a combination of cooling and compressing.
NB If hydrogen is burnt in oxygen it reforms water .
2H2(g) + O2(g) = 2H2O(l)
This is often done in a school lab. demonstration.
2007-02-02 15:37:22 · answer #4 · answered by lenpol7 7 · 0⤊ 0⤋
Mix them together, stand well back and get somebody else to light a match. You will get lots of heat and water.
To liquefy oxygen or hydrogen you would need to cool them to below their boiling point or store them under high pressure, neither are easy without specialist equipment.
2007-02-02 03:11:19 · answer #5 · answered by ? 3 · 0⤊ 0⤋
For a gas to turn into a liquid, you could do one of two things. One, put the gas under a very high pressure, something that is probably impossible with household items. Or two, cool it down tremendously, which is also close to impossible with household equipment.
2007-02-02 01:20:17 · answer #6 · answered by Anonymous · 0⤊ 0⤋
To liquify a gas it needs to be put under immense pressure, then very quickly expanded. This causes the gas to plummet in temperature and so liquifies.
2007-02-02 02:03:31 · answer #7 · answered by The Alchemist 4 · 0⤊ 0⤋
Just to add to the above: You can't do it at home. It requires heavy industrial processes.
2007-02-02 09:57:04 · answer #8 · answered by Anonymous · 0⤊ 0⤋
Have you heard of 'The Hindenburg'? Like that...
2007-02-02 01:12:37 · answer #9 · answered by Anonymous · 0⤊ 0⤋