Hot water freezes before cold water as the same conditions. Why and what is the meaning thermodynamic or physicochemical?

Question

anonymous · Answer

because of in hot water the molecular force of attraction between the particle is more weak compare to cold water hence the particle moves freely more in hot water result high pressure in hot water .so it is easy to freezes hot water compare to cold water...

anonymous · Answer

It doesn't, if you measure on a constant-mass basis.  To imagine otherwise is logically absurd.  However, if you put hot water and cold water in the freezer in an open container, then as a matter of practicality much more of the hot water will immediately evaporate -- it is hot, after all -- and that means you have much less water to turn into ice, and therefore, the container of hot water will often freeze first.  But this is just the result of sloppy experimental conditions.

vincent-lyon.fr · Answer

Although I usually agree with Taufique ;-) , I find Carl_Pham's comments more convincing and logical to answer Ayşegül's question.

experimentx · Answer

http://en.wikipedia.org/wiki/Mpemba_effect http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/freezhot.html#c3

anonymous · Answer

Thank you very much! :)