Why is the solubility of haloalkanes in water very low?


Haloalkanes are very slightly soluble in water because in order to dissolve a haloalkane in water, energy is required to overcome the attractions between the haloalkane molecules and also to break the hydrogen bonds between water molecules. On the other hand, less energy is released when new attractions are created between the haloalkane and the water molecules as these are not as strong as the original hydrogen bonds in water.


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