Is there a procedure that can change KCl(aq) into KCl(s)? I imagine it can be done by heating?

Question

Is there a procedure that can change KCl(aq) into KCl(s)?  I imagine it can be done by heating?

anonymous · Answer

KCl(aq) was a byproduct in a reaction (along with a ppt).  The KCl(aq) was decanted into a beaker leaving behind the ppt in a filter.  

My lab report asks "how could you recover the byproduct as a solid?" and I'm, like, "recover? ...solid??"

thomaster · Answer

If the KCl solution is very saturated you could add an organic solvent to lower the solubility of the salt, which will precipitate when it becomes oversaturated. But I think this is not the case.

So the best option you have is to evaporate the aqueous solution which will remove the water and leave the salt.

anonymous · Answer

Great, thank you!  You wouldn't happen to know why the dried solid of KCl would weigh more than the calculated ideal mass of it would you?  Cause apparently that's what happens and i'm stumped on explaining why this is so :(

jfraser · Answer

It's likely that some of the precipitate remained behind in the beaker, and when the water is evaporated, these crystals formed along with the potassium chloride as well