chemistry

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Calculate te calue of Ksp for Ca(NO3)2 using the data below.

Ba(aq) delta G0f= -561 kJ/mol
NO3 (aq) delta G0f= -109 kJ/mol
BaNO3 (s) delta G0f= -797 kJ/mol

  • chemistry -

    Sorry, I meant Ba(NO3)2 in the question

  • chemistry -

    Neither Ba(NO3)2 nor Ca(NO3)2 has a Ksp.

  • chemistry -

    What do you mean? Sorry this question is really confusing me

  • chemistry -

    Ba(NO3)2 is quite soluble. Solubility products, at least what I've been led to believe all these years, are good for slightly soluble materials only.
    I've never seen a Ksp listed for Ba(NO3)2 in any table I've consulted in the past 60 years.

  • chemistry -

    Oh ok, do you think its just a typo? My teacher said that it is realatively soluble, but more insoluble than other nitrate salts

  • chemistry -

    This may answer some of your questions.
    http://wwwchem.csustan.edu/chem1112/1112bar.pdf
    I looked on the web and found the solubility of Ba(NO3)2 as about 131 grams/L @ zero C and about double that at room temperature. I also found reference to the Ba(NO3)2 Ksp? (link above) plus another one on NaCl etc. Frankly, I don't think this is a strict solubility product; however, it is being used that way, and within reason, should work about the same way in saturated solutions of the salt. I think the bove link will answer most of your questions. I note there is a section on calculation delta G and that may help you also.

  • chemistry -

    Great! Thanks for your help

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