o-chem

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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

  • o-chem -

    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.

  • o-chem -

    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

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