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Formation of a solution from two compone...

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 :

A

`DeltaH_("sol")hArrDeltaH_(1)+DeltaH_(2)+DeltaH_(3)`

B

`DeltaH_("sol")hArrDeltaH_(1)+DeltaH_(2)-DeltaH_(3)`

C

`DeltaH_("sol")hArrDeltaH_(3)-DeltaH_(1)-DeltaH_(2)`

D

`DeltaH_("sol")hArrDeltaH_(3)-DeltaH_(1)-DeltaH_(2)`

Text Solution

Verified by Experts

The correct Answer is:
a
For an ideal solution
`DeltaH_(sol)=DeltaH_(1)+DeltaH_(2)+DeltaH_(3)`
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formation of a solution form two components can be considered as (i) Pure solvent rarr separated solvent molecules, DeltaH_(1) (ii) Pure solute rarr separated solute molecules, DeltaH_(2) (iii) separated solvent and solute molecules rarr solution, DeltaH_(3) Solution so formed will be ideal if