Formation of a solution from two components can be considered as :(i) Pure solvent → separated solvent molecules,∆H1(ii) Pure solute →separated solute molecules,∆H2(iii) separated solvent and solute molecules →solution, ∆H3Solution so formed will be ideal if :

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ΔHSoln =ΔH1+ΔH2+ΔH3

ΔHSoln =ΔH1+ΔH2−ΔH3

ΔHSoln=ΔH1−ΔH2−ΔH3

ΔHSoln =ΔH3−ΔH1−ΔH2

answer is A.

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Detailed Solution

ΔHSolution =ΔH1+ΔH2+ΔH3

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