My thoughts on the "hot water freezing faster"

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My thoughts on the "hot water freezing faster" Posted by Chris (more from Chris) on Thu, 9 Jun 2005 07:46:55

In Reply to: I know it makes no sense, but I've tried it and, Geoff, Thu, 9 Jun 2005 07:06:28 Members do not see ads below this line. - Help Keep This Site Online - Signup

First, take it to an extreme. One 55 gallon drum at 32.1 degrees fahrenheit. Another 55 gal drum at 210 degrees fahrenheit. Seal them and stick 'em in a freezer. Which one will freeze sooner?

Next, you have to consider that the hot or boiling water when placed in the freezer will evaporate at a much faster rate than the cold water. The freezer air is extremely dry and the energized (hot) water molecules will move more easily to gas (evaporate) much more readily than cold water. I think it is the reduced amount of water that actually freezes in the ice cube tray that causes this myth.

That's how I see it.

-Ludwig

posted by 68.164.255...

Posts in this Thread:

Does salt make water boil faster or hotter?, Nathan Pflaum , Wed, 8 Jun 2005 19:12:41
- Yes, true, salt raises the boiling point of water....., TKC, Wed, 8 Jun 2005 19:19:35
  - Sorta true..but not practicle..., REM in Seattle , Wed, 8 Jun 2005 20:11:17
    - So for boiling corn, Nathan Pflaum , Thu, 9 Jun 2005 08:53:43
    - A 0.5 deg C rise in boiling point may not be ....., TKC, Thu, 9 Jun 2005 07:25:24
    - And hot water freezes faster than cold water, Geoff, Wed, 8 Jun 2005 22:03:58
      - Urban myth mostly, but it could happen......, MI-Roger , Thu, 9 Jun 2005 13:49:44
      - No, boiled water freezes faster, once it comes down to, Red Rocket, Thu, 9 Jun 2005 04:29:23
        There are other effects that need to be considered...., TKC, Thu, 9 Jun 2005 07:35:46
        I know it makes no sense, but I've tried it and, Geoff, Thu, 9 Jun 2005 07:06:28
        My thoughts on the "hot water freezing faster", Chris, Thu, 9 Jun 2005 07:46:55 <-- Viewing This Message
        Water expands when frozen and since hot water..., Street, Thu, 9 Jun 2005 21:02:11
        Re: I don't think so..., JimBlake , Fri, 10 Jun 2005 08:36:20
        Since it's expanded, the larger surface area..., Street, Fri, 10 Jun 2005 09:01:45
        There goes my theory... out the window..., Street, Fri, 10 Jun 2005 10:17:47
        That makes a lot of sense. n/m, Geoff, Thu, 9 Jun 2005 08:43:16
        Re: but I thought water keeps the temp longer than gas, t_mokes, Thu, 9 Jun 2005 13:59:46
  - Almost not true., dmz789b, Wed, 8 Jun 2005 20:06:46

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