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
    Commented May 5, 2015 at 17:40
  • $\begingroup$ Tables of solubility $\endgroup$
    – Rosbie
    Commented May 5, 2015 at 17:44
  • $\begingroup$ Can you expand upon that? Perhaps with a reference $\endgroup$
    – bon
    Commented May 5, 2015 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
    Commented May 5, 2015 at 17:52
  • $\begingroup$ See the linked question for an answer $\endgroup$
    – bon
    Commented May 5, 2015 at 17:54


Browse other questions tagged or ask your own question.