| Search our quarter-million Q&As |
Home of the finishing HOTLINE since 1989
-----Determination of Nitric acid in Hydrochloric acid
2007
Dear friends
I have a problem. Kindly suggest me a method to quantitatively estimate Nitric acid contents in a solution of about 4% Hydrochloric acid, about 2% Nitric acid & 25% Ferrous chloride.
Thanks
V.K.Vatsa
QC Manager - Boisar, Maharashtra, India
2007
Vinod
You could measure the total amount of nitrate ion by doing ion chromatography on your samples. This wouldn't be a direct measure of the nitric acid, but would at least give you the nitrate.
Having said that you would need to choose a column and eluant that gives you a good separation of the chloride and nitrate.
Terry
- Auburn, Washington
2007
A lower tech way of going about it: boil a sample with Devarda's alloy, under the proper conditions. Then, distill off the resultant ammonia, to which the nitrate will be quantitatively converted. Then, do an acid/base titration on the distillate, with 0.02 N sulfuric acid.
There's a bunch of method references, which I don't have at my fingertips. If you need one, just give a shout and I'll look one up for you.
Dave Wichern
Consultant - The Bronx, New York
Sorry! Finishing.com is temporarily Read-Only.
Ted Mooney is retiring but I have several offers to take it over.
We're working hard to make sure we find it the best new home.