In my chemistry book writes that cooling an exothermic solution(e.g. $\ce{NaOH + H2O}$) increases it's solubility, and I can't understand why since the cooling should decrease it.

  • $\begingroup$ Why do you think cooling should decrease the solubility? $\endgroup$ – bon May 5 '15 at 17:40
  • $\begingroup$ Tables of solubility $\endgroup$ – Rosbie May 5 '15 at 17:44
  • $\begingroup$ Can you expand upon that? Perhaps with a reference $\endgroup$ – bon May 5 '15 at 17:45
  • $\begingroup$ ''Solubility of liquids and solids increases as the temperature raises ' - this is from the class book we use in Romania. I think solubility increases with temperature because there is need for heat for hydration of ions. And also, if the temperature is bigger, than the agitation of molecules should be bigger, and the process of diffusion should be faster ... I'm not a native english speaker, sorry. $\endgroup$ – Rosbie May 5 '15 at 17:52
  • $\begingroup$ See the linked question for an answer $\endgroup$ – bon May 5 '15 at 17:54

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