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Explain why(i) the dipole moment of chlorobenzene is lower than that of cyclohexyl chloride.(ii) haloalkanes are only slightly soluble in water but dissolve easily in organic solvents. |
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Answer» (i) Dipole moment is a product of charge and distance. Since chlorobenzene has lower magnitude of negative charge on Cl atom and shorter C—Cl bond than cyclohexyl chloride due to resonance therefore chlorobenzene has lower dipole moment than cyclohexyl chloride. (ii) This is because the new intermolecular attractions between haloalkenes and organic solvent molecules have almost the same strength ones being broken in the separate haloalkan and solvent molecules. |
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