January 15, 2007 at 1:12 am #6771mufanParticipant
What determines the speed of water flow from a hyposomatic to a hypersomatic solution. For instance, if I had a concentrated Nacl solution would water flow faster to it or to a concentrated MgBr, NaBr, MgCl, AgCl, etc. solution?
Is it solely a function of concentration or does the dissociation constant of the salt have something to do with it?
January 15, 2007 at 9:44 am #66678WouterVSParticipant
It’s been a while since I’ve studied this, but I do remember the method.
You need to use a formula you’ve seen, and calculate what the ‘concentration gradient’ is.
NaCl whill ‘fall apart’ into Na+ en Cl- in water,
whereass e.g. MgCl2 will form Mg2+ and 2 Cl-
Since MgCl2 will form more atoms it’ll have a higher concentration-gradiënt and the water will flow to the MgCl2 to compensate for the difference.
You need a formula to calculate the exact figures here, but if I remember correctly, that’s bassicly al there is to it.
January 15, 2007 at 10:54 am #666872810712Participant
the factors affecting the velocity should be- mass of ion , no. of ion produced per molec. and in bulk, [as said above] n temp. which relates to KE…
am too. curious abt the formula///
January 15, 2007 at 6:11 pm #66737mufanParticipant
Does the ration of postive to negative ions have anything to do with it? For instance if I had Na2So4 then I would have 2 Na+ and one SO4-. But if I had MgCl2 then I would have 2 anions and one cations.
So does water flow faster toward a solution with more positive ions (na2so4) or a solution with more negative ions (mgcl2)?
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