The Naked Scientists

The Naked Scientists Forum

Author Topic: What is the freezing point of water?  (Read 4062 times)

Krisha-Mae Manabat

  • Guest
What is the freezing point of water?
« on: 20/11/2011 12:01:02 »
Krisha-Mae Manabat asked the Naked Scientists:
   
What is the freezing point of water?

What do you think?
« Last Edit: 20/11/2011 12:01:02 by _system »


 

Offline Don_1

  • Neilep Level Member
  • ******
  • Posts: 6890
  • Thanked: 7 times
  • A stupid comment for every occasion.
    • View Profile
    • Knight Light Haulage
What is the freezing point of water?
« Reply #1 on: 20/11/2011 14:19:04 »
Pure water has a freezing point of 32oF, 0oC at sea level under normal pressure. Impurities in the water (such as sea salt), pressure and altitude will raise or lower the freezing point.
 

Offline rosy

  • Neilep Level Member
  • ******
  • Posts: 1018
  • Chemistry
    • View Profile
What is the freezing point of water?
« Reply #2 on: 20/11/2011 16:37:36 »
Quote
Pure water has a freezing point of 32oF, 0oC at sea level under normal pressure. Impurities in the water (such as sea salt), pressure and altitude will raise or lower the freezing point.

Of course, altitude only makes a difference because at higher altitudes air pressure is less... there's no inherent effect on freezing point as a result of altitude if your sample were in a pressure-controlled container.
 

Offline Bored chemist

  • Neilep Level Member
  • ******
  • Posts: 8665
  • Thanked: 42 times
    • View Profile
What is the freezing point of water?
« Reply #3 on: 20/11/2011 17:02:58 »
The effect of pressure is small- about a hundredth of a degree per atmosphere of pressure.
at normal pressures it will be very close to 273.15K
 

The Naked Scientists Forum

What is the freezing point of water?
« Reply #3 on: 20/11/2011 17:02:58 »

 

SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums
 
Login
Login with username, password and session length