1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Solubility of Sodium Benzoate

  1. Feb 8, 2008 #1
    Would sodium benzoate react (dissolve) when added to water and HCl, or to water and NaOH? Also, how would you write the chemical equations for the reactions?
     
  2. jcsd
  3. Feb 9, 2008 #2

    symbolipoint

    User Avatar
    Homework Helper
    Education Advisor
    Gold Member

    If you want to know for certain, look for sodium benzoate and benzoic acid in a handbook of chemistry & physics. Sodium salts are usually very soluble in water; but if you have strong acid present or enough strong acid, you may sufficiently convert the sodium benzoate to its acid form (benzoic acid), and for this solubility, check a handbook. As for the presence of NaOH, again, not sure if you have enough solute NaOH present to affect the solubility of the quantity of sodium benzoate; my guess is that beyond a certain concentration of NaOH, this solute may affect the solubility of your sodium benzoate, but really not sure.
     
  4. Feb 10, 2008 #3
    sodium benzoate is a sodium salt and is ionic, it dissolves in water.

    sodium benzoate will react with HCl to give NaCl and benzoic acid. benzoic acid is insoluble, it will give a white ppt.

    C6H5COO-Na+ + HCl -------> C6H5COOH + NaCl
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?