posted by reba on .
300ml aq solution of 30g malononitrile extracted w/ether If K = 1.5 what results would be acheived from 3 100ml portions of ether...MORE importantly how do you work the problem..thanks
This is a partition coefficient problem. You need to make sure what K is. IF it is organic layer/aqueous layer, then the following applies.
fn = [1 + Kd*(Vo/Va)]-n.
where fn = fraction solute REMAINING in the water layer after n extractions, Vo = volume organic solvent and Va = volume aqueous layer. Post your work if you get stuck.
what volume? sorry out of school for 30yrs! also 2nd part give soluability of 20/100ml in ether & 13.3g/100ml in water and the experiment is being done with 30g (mw 188.61) in 300ml of water to be extracted wih ether. I don't knwo how to proceed