# Washing a solvent?

Why would you wash a solvent with $\ce{NaOH}$ solution?

Does $\ce{NaOH}$ solution help water and solvent separate like $\ce{NaCl}$ solution does (salting out)?

Would you wash with hot or cold $\ce{NaOH}$ solution/water?

Anybody know anything about washing a solvent please explain basics to me? Thank you

• In my experience, washing is quite literal in meaning. I use solvents to remove an impurity that is soluble in the solvent while the product is not. If you're putting a strong base into solvent, I would think it's to remove an acid and allow separation by forming an aqueous layer. I'm no professional, so I'll just leave this comment here incase it helps. – PiZzL3 Mar 1 '15 at 2:38

As the first comment suggests, washing with a strong base like $\ce{NaOH}$ suggests that you are trying to remove an acid. A strong base would remove any acid, strong or weak. The base would be in an aqueous layer, and so there would also be the removal of water-soluble compounds.