In a chem lab we had an unknown copper compound in water, we used Magnesium to displace the copper and added HCl to speed things up. The copper fell to the bottom of the beaker and we then poured the solution through filter paper to catch and weigh the copper. Once the copper was in the filter paper we had to rinse it in ethanol and acetone before putting it in the oven to evaporate everything aside from the copper(II) and the paper.
Can someone please explain the purpose of the ethanol and acetone? Thanks a ton.