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Topic: dissolving more substance in a saturated solution  (Read 2285 times)

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Offline amir.mi

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dissolving more substance in a saturated solution
« on: November 25, 2014, 02:12:04 PM »
Hi there!
If I have a saturated solution of NaCl , can I dissolve another salt like KNO3 in it or not?
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Offline Arkcon

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Re: dissolving more substance in a saturated solution
« Reply #1 on: November 25, 2014, 03:30:31 PM »
Presumably, you're aware of the common ion effect, so you didn't ask for sodium hydroxide or potassium chloride.  Now, here's something to think about:  if you've made a saturated sodium chloride solution, what has actually happened?  Is the water, different in some way?
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Offline amir.mi

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Re: dissolving more substance in a saturated solution
« Reply #2 on: November 26, 2014, 11:43:16 AM »
You mean a difference except that a portion of water molecules have surrounded dissolved ions? :-\
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Offline Arkcon

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Re: dissolving more substance in a saturated solution
« Reply #3 on: November 26, 2014, 12:29:15 PM »
Quote from: amir.mi on November 26, 2014, 11:43:16 AM
You mean a difference except that a portion of water molecules have surrounded dissolved ions? :-\

There you go, I'm glad you deduced that part.  The water activity will be reduced somewhat by the excess of solute.
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Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.
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