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Formation of a solution from two compone...

Formation of a solution from two components can be considered as
(1) pure solvent`rarr`separated solvent
(2)pure solute `rarr`separated solute molecules, `DeltaH_2`
(3) separated solvent and solute molecules `rarr` solutions, `DeltaH_3`
Solutions so formed will be ideal if

A

`DeltaH_("soln")=DeltaH_1-DeltaH_2-DeltaH_3`

B

`DeltaH_("soln")=DeltaH_3-DeltaH_1-DeltaH_2`

C

`DeltaH_("soln")=DeltaH_1+DeltaH_2+DeltaH_3`

D

`DeltaH_("soln")=DeltaH_1+DeltaH_2-DeltaH_3`

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The correct Answer is:
C
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