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Chemistry Forums for Students => Physical Chemistry Forum => Topic started by: ksr985 on May 24, 2005, 12:21:38 PM

Title: The problem of components
Post by: ksr985 on May 24, 2005, 12:21:38 PM

Can anyone please tell me how many components there are in an unsaturated solution of NaH2PO4 in water? and how different is this example from, say, an unsaturated solution of Na2HPO4 in water?

Title: Re:The problem of components
Post by: Borek on May 24, 2005, 06:42:49 PM

Same forms in both cases (ions and uncharged particles), different concentrations. To list all forms is not a problem. To calculate the concentrations... see here:

http://www.chemicalforums.com/index.php?board=2;action=display;threadid=3330

17 posts at the moment and we are not done yet ;)

Title: Re:The problem of components
Post by: ksr985 on May 26, 2005, 02:51:42 PM

um, could you please elaborate. i want to know what C will be, if i have to apply gibbs phase rule to the system. F=C-P+2

Title: Re:The problem of components
Post by: Dude on May 26, 2005, 05:02:53 PM

My recollection is that individual species are not included if they can recombine to form the salt.  C would be two in both cases: water and salt in an unsaturated solution.