Saved Bookmarks
| 1. |
Amongthe three isomericdichlorobenzenes, whichhas thehighest boilingpointandhighestmeltingpoint ? |
| Answer» Solution :Boiling point of o-dichlorobenzene is greater than the boiling point of m -and p-dichlorobenzenes DUE to its greater polar nature. Boiling point order is : `o - gt m - gt p -` dichlorobenzene. Melting points of p- dichlorobenzene is greater than that of o- and m-dichlorobenzenes. It is due to symmetry of para-isomer of dichlorobenzene that fits in crystal lattice BETTER as COMPARED to o- and m-isomers. Melting points DECREASE in the order : `p- gt o- gt m-` dichlorobenzene | |