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Acidified Barium Nitrate
Posted: 13 Sep 2011, 12:51
by judygee
Dear All - Need some help please! Need to know the acid and concentration to acidify a solution of Barium Nitrate for a "Sulphate content in Fertilizer" for Year 12 Chem. I am assuming a few drops of concentrated acid but which acid?? Your input would be most appreciated. Cheers. Judy
Re: Acidified Barium Nitrate
Posted: 13 Sep 2011, 13:47
by ellice
We use 5% Barium Chloride and drops of conc HCl.
Just a further note to this , we used a method this year that added agar as a coagulant (I think I got the method from Chemtalk), and the results were really good.
Re: Acidified Barium Nitrate
Posted: 13 Sep 2011, 14:11
by rae
We use saturated barium chloride and then separately 2M HCl. The prac we do is out of Heinmann Chemistry practical manual.
Re: Acidified Barium Nitrate
Posted: 15 Sep 2011, 12:55
by judygee
Thank you both for you input - used drops of conc. HCl as it was quicker however when I'm given more time to prepare will try the other suggestion. Many Thanks, Judy
Re: Acidified Barium Nitrate
Posted: 15 Sep 2011, 14:17
by Robdean
Hi Judy,
Have just this minute finished getting this prac ready and we're using 7% barium chloride and conc HCl.