Chemistry

Deacon Erickson

27 July, 10:54

Suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2 (cn) 2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x) / 300; the ratio of these quantities is equal to k 20/13.3. williamson, kenneth l.; masters, katherine m ... macroscale and microscale organic experiments (available titles coursemate) (page 163). cengage textbook. kindle edition.