HCL+KNO3 to make HNO3?
Posted 3 January 2006 - 03:24 AM
Posted 3 January 2006 - 06:47 AM
and it took about an hour to get rid of all the smoke that was hovering around my basement.
i did that once, 20grams when up in smokes, took nearlly 2 hours for the smoke to clear off, couldnt see much in the kitchen.
looks like i gotta wait till school starts so i can "borrow" glass ware from class.
Posted 6 January 2006 - 07:51 AM
Pyrex casserole dishes or glass coffee carafs would work at a push but not recommended.
umm i could be wrong but, Pyrex is actually Borosillicate glass
Posted 6 January 2006 - 12:15 PM
Posted 6 January 2006 - 12:53 PM
B) with the exception of the coffee carafe they`re not designed for local heating.
C) because they hold a large amount of liquids, Any problems that occur will be significantly harder to deal with.
Posted 14 January 2006 - 02:16 AM
Posted 16 July 2010 - 05:54 PM
hmm... I don't think that'll work considering that both of the reactants are ionic and completely soluble in water. Basically, if you mix the two, you'll just have a solution of H+, Cl-, K+, and NO3- ions floating around so to speak. And I don't think that there's a way to separate both the Cl- AND K+ ions from the solution either. I suppose you could remove the Cl- by adding AgNO3 which would form a solid AgCl which could then be filtered, but I don't think there's an effective way of removing potassium ions.
As a matter of facts, I actually pulled of this exact reaction just the other day. I wanted to make KCl by mixing 30% w/w hydrochloric acid, with solid KNO3. This resulted in an endothermic reaction, producing the ions you also mention in the above postulate (K⁺, Cl⁻, NO3⁻ and H3O⁺).
However, it is possible to seperate the KCl by recrystallization. I reacted 100mL 30% hydrochloric acid with 83g of powdered potassium nitrate, yielding about 45g of crude KCl after crystallization.
I don't know though, what the complete reaction should look like! Under the reaction I found that nitrogen gas was produced as well, but what actually remains in the mother liquid, I don't know...:| Maybe, it is a weak solution of "aqua regia"?
The following reaction occurs, when nitric acid and hydrochloric acid are mixed. This also explains, why aqua regia needs a 1 : 3 molar ratio of HNO3 and HCl.
HNO3 + 3HCl --> ONCl + Cl2 + 2H2O
The precise reaction is much more complex, the equation above only is a net equation.
If you heat a mix of HNO3 and HCl (or KNO3 and HCl), then you'll see that the liquid becomes yellow, or even orange. That yellow/orange color is the color of NOCl. At high concentrations of HCl this is stable. At lower concentrations of HCl it hydrolyses:
ONCl + H2O <--> HNO2 + HCl
Hey! Thanks for this reply dude.. really helped me out a lot! I got to a pale yellow liquid after adding aqeous HCl to KNO3.. I wanted to produce KCl, which I also did.. I used slow heating during the crystallizationprocess.. When combining hydrochloric acid with potassium nitrate, an endothermic reaction occurs, and N2 is released.. as long as no heating is applied, I think you would be in the 'safe zone' here:)
Posted 15 June 2011 - 11:17 PM
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