ThisThomasMorgan wrote:
Submit it to mythbusters.
It would:
a) remain water if the steel can hold up to very high pressure
or
b) break the case at it's weakest point
increasing the pressure decreases the freezing point of water.
a) remain water if the steel can hold up to very high pressure
or
b) break the case at it's weakest point
increasing the pressure decreases the freezing point of water.
Doesn't the pressure need to be pretty significant to affect freezing point?
The experiment as roughly explained would be at roughly 1 atm, and even if you filled the steel container with water before freezing, the volume of liquids is essentially static; although the volume of the water as it (attempts) to transition from liquid to solid would (attempt to) increase, I can't imagine that this pressure exertion alone would be near enough to breach a sturdy steel container.
Furthermore, I'm not so sure the pressure of expansion of the cold water alone, inside the container, would be high enough to depress the freezing point and prevent the transition.
I'm tired so maybe this is just incoherence kicking in...some previous posters may know their chem. better than me to be able to answer this.
The experiment as roughly explained would be at roughly 1 atm, and even if you filled the steel container with water before freezing, the volume of liquids is essentially static; although the volume of the water as it (attempts) to transition from liquid to solid would (attempt to) increase, I can't imagine that this pressure exertion alone would be near enough to breach a sturdy steel container.
Furthermore, I'm not so sure the pressure of expansion of the cold water alone, inside the container, would be high enough to depress the freezing point and prevent the transition.
I'm tired so maybe this is just incoherence kicking in...some previous posters may know their chem. better than me to be able to answer this.
Last edited by -CARNIFEX-[LOC] (2009-02-04 22:36:08)
It would remain water if the steel was strong enough.
A similar thing happens in the interiors of very large planets. Hydrogen gas, under extreme pressure, becomes liquid even though it's thousands of degrees. Exactly the same phenomenon.
Mind you, if the ice was subjected to that much pressure, it would probably heat up to just-above freezing and melt anyway.
A similar thing happens in the interiors of very large planets. Hydrogen gas, under extreme pressure, becomes liquid even though it's thousands of degrees. Exactly the same phenomenon.
Mind you, if the ice was subjected to that much pressure, it would probably heat up to just-above freezing and melt anyway.
Last edited by Spark (2009-02-04 23:24:26)
The paradox is only a conflict between reality and your feeling what reality ought to be.
~ Richard Feynman
~ Richard Feynman
depending on variables the water could either superfreeze or high density amorphous ice would form. It all depends on whether nucleation occurs.
could the ice become more dense? or is that impossible
Is this a PV=NrT issue?
ie.
Pressure x Volume=moles x constant x Temp.
Sounds like it to me. Although its been many years since I have used that equation.
ie.
Pressure x Volume=moles x constant x Temp.
Sounds like it to me. Although its been many years since I have used that equation.