which solvent would be the upper phase in each case? diethyl ether/water ? dichl

Question

which solvent would be the upper phase in each case? diethyl ether/water ? dichloromethane/water? chloroform/water? n-hexane/water? If one wanted to reduce the solubility of benzoic acid inwater to get it better partitioned into diethyl ether, would it bebetter to add potassium carbonate or sodium chloride? why ?thnxxxxxxx which solvent would be the upper phase in each case? diethyl ether/water ? dichloromethane/water? chloroform/water? n-hexane/water? If one wanted to reduce the solubility of benzoic acid inwater to get it better partitioned into diethyl ether, would it bebetter to add potassium carbonate or sodium chloride? why ?thnxxxxxxx

Explanation / Answer

We know that :       The component which is lower indensity among the two components in a mixture the lower densitycomponent is       present in the upper phase anddenser component is present in the lower phase.         Density of diethyl ether is 0.7134 g / cc whereas the density of water is 1 g / cc so diethyl ether presenton          upperphase.          Densityof dichloromethane is 1.3266 g / cc whereas the density ofwater is 1 g / cc so water is present on           upperphase.          Densityof  chloroform is 1.48 g / cc whereas the densityof water is 1 g / cc so water is present on           upperphase.           Densityof  n-hexane is 0.6548 g / cc whereas thedensity of water is 1 g / cc so n-hexane is present on           upperphase.              If we want to reduce the solubility of benzoic acid in water thenit should be added on K2CO3 so it forms the              salt which decreases the solubility of benzoic acid andit is more soluble in ether.           upperphase.           Densityof  n-hexane is 0.6548 g / cc whereas thedensity of water is 1 g / cc so n-hexane is present on           upperphase.              If we want to reduce the solubility of benzoic acid in water thenit should be added on K2CO3 so it forms the              salt which decreases the solubility of benzoic acid andit is more soluble in ether.           upperphase.              If we want to reduce the solubility of benzoic acid in water thenit should be added on K2CO3 so it forms the              salt which decreases the solubility of benzoic acid andit is more soluble in ether.

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