w0lvez
Well-known member
What are the ways to increase HCL concentration? I tried boiling it but I'm not sure if the concentration increase because I can't get the exact weight cause my digital scale is broken.
jimdoc said:Why are you wanting to increase the concentration?
How high are you trying to concentrate it?
Jim
No offense, but I have absolutely no idea what you're talking about.I'm trying if a more concentrated HCL will deposit better than less concentrated HCL if use as activator.
butcher said:Study azeotropes of acids, dilute acids can be concentrated up to that point, then acid will vapor off.
Depending on concentration the boiling point changes, so temperature is an important factor when concentrating your acid.
Example 35% HNO3 can be concentrated to about 68% HNO3, then you are just vaporizing off 68% acid if heating any further.
boiling point and boiling a solution should not be confused,
boiling a solution you will surely loose your acid, and even metals the acids contain.
Please don't take offense, but this makes little sense to me. It sounds like you're saying that, at 69%, the vapors are 100% nitric with no water and then, magically, at 68%, the vapors suddenly contain 32% water. I can't believe that this is the way it works. It just has to be a sliding ratio, probably not linear, from where you start (whether above or below the azeotrope), until you reach the azeotrope.Now if we had 98% HNO3 and we evaporated it we would just have nitric in vapors untill we reached 68%
Of course, I would agree to this. My point is, how much acid would he lose in doing so. It would probably be little if he started with 19% but I would bet it would be quite a bit if he started with 5%.So yes he can heat his dilute HCl to vapor off water until he reaches 20%
w0lvez said:What are the ways to increase HCL concentration?
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