gold digger Posted February 14, 2017 Share Posted February 14, 2017 (edited) Hey I am trying to make some nitric acid by mixing potassium nitrate(impure source), hydrochloric acid(30%) and copper. I start by dissolving potassium nitrate in warm water, then adding the hydrochloric acid and copper. But there is no reaction. i think it may be because of the impurity in the potassium nitrate. The potassium nitrate source is mixed with Potassium perchlorate and Barium nitrate. If this is the case, can somebody tell me how i can purify the potassium nitrate? Edited February 14, 2017 by gold digger Link to comment Share on other sites More sharing options...
gold digger Posted March 7, 2017 Author Share Posted March 7, 2017 I have scraped this idea, and thinking i'm gonna try out the "ostwalt process" instead. But can someone tell me about the drying step, is this necessary? Calcium oxide is pretty hard to find where i live. Link to comment Share on other sites More sharing options...
Sensei Posted March 7, 2017 Share Posted March 7, 2017 (edited) Calcium oxide is pretty hard to find where i live. You don't have ready access to Calcium Carbonate rocks.. ? It decomposes to Calcium Oxide and Carbon Dioxide CaCO3 + heat -> CaO + CO2 Edited March 7, 2017 by Sensei Link to comment Share on other sites More sharing options...
gold digger Posted March 7, 2017 Author Share Posted March 7, 2017 (edited) You don't have ready access to Calcium Carbonate rocks.. ? It decomposes to Calcium Oxide and Carbon Dioxide CaCO3 + heat -> CaO + CO2 Thanks for info I'm new to chemistry, but if i heat up chalk in a steel tube, could i use that to dry the gas? Edited March 7, 2017 by gold digger Link to comment Share on other sites More sharing options...
Sensei Posted March 7, 2017 Share Posted March 7, 2017 (edited) I'm new to chemistry, but if i heat up chalk in a steel tube, could i use that to dry the gas? Chalk (for drawing on blackboards) doesn't have to be made of CaCO3. It could be CaSO4. You can check it by using acetic acid. CaCO3 reacts with CH3COOH and release CO2 gas (a lot). Yes, you can use it to dry gas. Like it's showed f.e. on this page http://www.bbc.co.uk/bitesize/standard/chemistry/plasticsandothermaterials/fertilisers/revision/6/ Edited March 7, 2017 by Sensei Link to comment Share on other sites More sharing options...
gold digger Posted March 7, 2017 Author Share Posted March 7, 2017 Thanks for quick response and good information. Now i'm one step closer to dissolve some gold Link to comment Share on other sites More sharing options...
gold digger Posted March 18, 2017 Author Share Posted March 18, 2017 hello again I was wandering if i am able to purify ammonia from liquid NH4Cl, or if there is some way i can dry it? the solution i use only contain 5 - 15 % ammonia, so i got some problems when i was trying out the process. The comments for the question mention stripping ammonia from a water in a digestate of a Biogas plant. Ammonia can be removed from waste streams by steam or air stripping after adding NaOH to suppress formation of ammonium ions. (http://chemistry.stackexchange.com/questions/174/why-is-distillation-not-a-viable-way-to-seperate-ammonia-from-water) Is it possible to add NaHO to the solution and boil off the water, then use the dry chemical or do another step, so i can use it? Link to comment Share on other sites More sharing options...
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