I was trying to make a 5 M NaCl stock but I have problems to dissolve it.
I added 292.2 g to about 750 mL MQ initially but after 2 hours didn't dissolve so I added more water and heat it up. I even reach to boiling to dissolve but did't work either. Even worse, the solution surface started to cristalize ¬¬'...
It's the first time I have to prepare this stock and I'm a little bit paranoid already


I don't know, having a problem with this and not with other really complex solutions pfff
If anybody has any suggestion trick or whatever, it would be good