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Karnataka Board PUCPUC Science 2nd PUC Class 12

Out of o-and p-dibromobenzene which one has higher melting point and why?

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Question

Out of o-and p-dibromobenzene which one has higher melting point and why?

Short/Brief Note
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Solution

 p-Dibromobenzenc has higher melting point than its o-isomer.

It is due to symmetry of p-isomer which fits in crystal lattice better than the o-isomer.

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Chapter 10: Haloalkanes and Haloarenes - Exercises [Page 142]

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NCERT Exemplar Chemistry [English] Class 12
Chapter 10 Haloalkanes and Haloarenes
Exercises | Q III. 45. | Page 142

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