From: poutnik@privacy.net   
      
   Dne 11/12/2017 v 08:47 Alaia napsal(a):   
   > On Thursday, 2 April 1998 16:00:00 UTC+8, CINDY SMITH  wrote:   
   >> Why does salt water evaporate faster than fresh water?  My science is a bit   
   >> sketchy.  From what I understand (I'm an English major, forgive me), salt   
   water   
   >> evaporates faster because the atomic charge of salt water is different from   
   >> that of fresh water.  Salt, I think, also absorbs water?  I've heard that   
   >> rubbing salt in an open wound causes the wound to heal faster because salt   
   >> absorbs blood, for example.  Salt somehow changes the molecular balance of   
   >> water.  Am I on the right track?  Can someone recommend a book I can find   
   in a   
   >> library that answers the question?  Sorry if the question is too basic.   
   >>   
   >   
   > When NaCl dissolves in water, Na+ and Cl- ions form ion-dipole interaction   
   with water.   
   >   
   > As water is evaporated from salt water, less water is available to form   
   ion-dipole interaction with Na+ and Cl- ions. This results more ionic bonds   
   between Na+ and Cl- to be formed, releasing heat energy to further evaporate   
   more water in salt water.    
   Hope this helps.   
   >   
      
   >   
   If water evaporated faster from salt water,   
   then at the same temperature,   
   vapour tension over salt water would be higher than over pure water.   
      
   But opposite is true.   
      
   With higher concentration of sodium chloride,   
   the water vapour tension decreases   
   to about 75 % for the saturated salt solution.   
   That means air closed over the saturated salt solution   
   has relative humidity near 75 %.   
      
   IF you put saltwater and freshwater into a closed container,   
   freshwater will evaporate and saltwater will absorb the vapour.   
      
      
   --   
   Poutnik ( The Pilgrim, Der Wanderer )   
      
   A wise man guards words he says,   
   as they say about him more,   
   than he says about the subject.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)