Water Expanding?

[DavidC]

Hey guys.

I know that water expands when it freezes, and shrinks (in volume) when it thaws.

However, when you start to boil water, before it actually boils, would it expand slightly due to the heat?

Weird question, but I'm curious if a graph of volume over temperature would look a little like a hyperbola instead of the standard line-ish kinda shape that something like iron would have.

--Dave.

[tbach24]

Hahahah, what the hell is a rant?

[Sweaburg]

yes.

http://hyperphysics.phy-astr.gsu.edu/hbase/chemical/imgche/waterdens.gif


The volume goes as the inverse of this graph, and water is pretty unique in its density curve.

[Shillx]

I wanna say that H2O expands at 2*10^-4 L/L/K but this is probably off by a bit. At any rate, it expands at roughly a constant volume while it is a liquid (at least from 10C - 100C). So if you take 1 Liter of water at 20 C and heat it to 40 C with no evaporation, the new volume will be about 1.004 L. Something like camphor or gasoline will have a much larger coefficent of expanison.

Brad

[DavidC]

Thanks guys.

Now I know. /images/graemlins/smile.gif

Although I have no idea what the math stuff was all about.

--Dave.

[istewart]

[ QUOTE ]
Hahahah, what the hell is a rant?

[/ QUOTE ]

Most misapplied quote ever.