In: Chemistry
What is the mechanism by which solute is dissolved in non polar solvents? Explain briefly. (5 mark)
Ans: Any solute dissolves in a solvent on the following factors-
> Favourable interaction
>Free energy change of solute and solvent
The mechanism of solute-solvent interaction involves 3 steps:-
1) Dettachment of solute from bulk form
(
solute bulk)
(solute bulk-1) +
(dettached solute)
2) Formation of vaccant side in solvent
(solvent)
(solvent
with vaccant site) +
(
free solvent molecule)
3) Insertion of dettached solute molecule in vaccant site of solvent
+
(solvent
with embeded solute molecule)
As in case of non-polar solvent, it don't have dielectric constant , not have ability to form covalent bond and neither it can form H-bond. Hence non-polar solvents only are able to dissolve non-polar solutes by inducing dipole moment.
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