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Topic: why solubility of NaCl decreases?  (Read 3704 times)

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Offline Ksharindam

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why solubility of NaCl decreases?
« on: January 09, 2012, 09:36:16 PM »
Why the solubility of NaCl decreases when NH3 is bubbled.and sodium chloride precipitates.this is used to purify sodium hydroxide in diafragm cell.
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Offline Silppuri

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Re: why solubility of NaCl decreases?
« Reply #1 on: January 15, 2012, 06:52:00 AM »
So you're bubbling NH3 in an H2O solution with NaCl in it?

I'll throw that maybe because - depending on the temperature of water - NH3 is more soluble in water than NaCl. This happens with NaOH as well.
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If you add 1,00 litres of ethanol to 1,00 litres of water, you get 1,92 litres of solution.
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