DMT-Nexus member
Posts: 16 Joined: 13-Dec-2010 Last visit: 11-Aug-2018
|
Im mixing sea salt and water and basifing it with sodium hydroxide and was wondering at what PH would I hit the sodium chloride to make it perciptate?
|
|
|
|
|
DMT-Nexus member
Posts: 14191 Joined: 19-Feb-2008 Last visit: 06-Feb-2025 Location: Jungle
|
I dont think that is happening. Your sodium chloride will be dissolved in water, and so will your lye, until you add so much that the lye cant dissolve anymore, but the sodium chloride salt will stay dissolved. What are you trying to do?
|
|
|
Kalt und Heiß, Schwarz und Rot, Kürper und Geist, Liebe und Chaos
 
Posts: 4661 Joined: 02-Jun-2008 Last visit: 30-Apr-2022
|
Sodium chloride does not have a pka. pka (or pkb) values only apply to substances that behave as weak acids and bases. Not salts, strong bases and strong acids. Need to calculate between salts and freebases? Click here! Need to calculate freebase or salt percentage at a given pH? Click here!
|
|
|
DMT-Nexus member
Posts: 16 Joined: 13-Dec-2010 Last visit: 11-Aug-2018
|
Infundibulum wrote:Sodium chloride does not have a pka. pka (or pkb) values only apply to substances that behave as weak acids and bases. Not salts, strong bases and strong acids.
thx
|
|
|
DMT-Nexus member
Posts: 16 Joined: 13-Dec-2010 Last visit: 11-Aug-2018
|
endlessness wrote:I dont think that is happening. Your sodium chloride will be dissolved in water, and so will your lye, until you add so much that the lye cant dissolve anymore, but the sodium chloride salt will stay dissolved. What are you trying to do? The other chlorides in the sea salt seem to perceptate at different PHs why wouldn't Sodium chloride?
|
|
|
DMT-Nexus member
Posts: 14191 Joined: 19-Feb-2008 Last visit: 06-Feb-2025 Location: Jungle
|
How do you know that? Which other chlorides you say are precipitating at what pH?
|
|
|
DMT-Nexus member
Posts: 219 Joined: 07-Jul-2013 Last visit: 19-Apr-2024
|
Have a look on one of the nano reef forums there is a lot of information on saltwater chemistry. Ph plays a large role in what will and won't dissolve / precipitate.
Salt water chemistry is massively important in a reef tank and there is a lot of detailed science available if you are willing to look.
Peace and love
|