Formation of a solution from two componenets can be considered as :
(i) pure sovent `rarr` separated solvent molecules, `/_\H_(1)`
(ii) Pure solute `rarr`separated molecules,`/_\H_(2)`
(iii) separated sovent and solute molecules`rarr`solution, `/_\H_(3)`
solution so formed will be ideal if :

Options

A. `/_\H_("soln")=/_\H_(1) + /_\H_(2) +/_\H_(3)`
B. `/_\H_("soln")=/_\H_(1) + /_\H_(2) -/_\H_(3)`
C. `/_\H_("soln")=/_\H_(1) -/_\H_(2) -/_\H_(3)`
D. `/_\H_("soln")=/_\H_(3) - /_\H_(1) -/_\H_(2)`

Answer

a