1) Compound Xdissolves in water and needs to be extracted with an organicsolvent
ID: 678702 • Letter: 1
Question
1) Compound Xdissolves in water and needs to be extracted with an organicsolvent. Its solubility in toluene is 0.65 g/mL, in ethanol is 20g/mL and in methylene chloride is 12.5 g/mL. Ethanol forms ahomogeneous layer when mixed with water. Toluene and methylenechloride do not.a) Why would ethanol and toluene NOT be chosen as the organicsolvents for the extraction discussed above?
b) After the methylene chloride and water layers are mixed andseparated, is it the upper or lower layer that would be the organiclayer?
Explanation / Answer
a) in case of ethanol since it forms a homogeneous layer with waterso no seperation is there to seperate the organic compound and incase of toluene the solubility of the compound is very less so moreamount of solvent and more extractions are needed to extract thecompound. b) the upper layer will be the organic layer because methylenechloride is less dense when compared to water. hope this helps
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