Chemistry, asked by guptaaditya5410, 1 year ago

Solubility of paradichlorobenzene is more than its ortho and para isomers

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Answered by atuldubey740
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ASKHome >> CBSE XII >> Chemistry >> p-Block Elements
p- Dichlorobenzene has higher melting point and lower solubility than o- and m- isomers Discuss.

cbse class12 chemistry sec-c ch-7 p-block-elements
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asked Nov 7, 2016 by meena.p
edited Dec 14, 2016 by sharmaaparna1

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Solution :
The p- isomers being more symmetrical fits closely in the crystal lattice and thus has stronger inter-molecular forces of attraction than o- and m- isomers .
As during melting or dissolution , the crystal lattice breaks , therefore a large amount of energy is needed to melt or dissolve the p - isomer than the corresponding o-and m-isomers .
In other words , the melting point to the p- isomers is higher and its solubility lower than the corresponding o- and- m- isomers
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