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| 1. |
p-Dichlorobenzene has higherm.p. and lower solubility than those ofo -and m-isomers. Discuss. |
| Answer» SOLUTION :The p-isomer being more symmetrical fits closely in the CRYSTAL LATTICE. It has stronger intermolecular forces of attraction than those ofo - and m-isomers. During melting or dissolution, the crystal lattice BREAKS, therefore, a LARGER amount of energy is needed to melt or dissolve the p-isomer than the correspondingo - and m-isomers. In other words, the melting point of the p-isomer is higher and its solubility lower than the correspondingo - and m- isomers. | |