Solutions Question 303

Question: Formation of a solution from two components can be considered as

(i) Pure solvent separated solvent molecules, ΔH1 (ii) Pure solute separated solute molecules, ΔH2 (iii) Separated solvent and solute molecules Solution, ΔH3 Solution so formed will be ideal if

Options:

A) ΔHsoln=ΔH3ΔH1ΔH2

B) ΔHsoln=ΔH1+ΔH2+ΔH3

C) ΔHsoln=ΔH1+ΔH2ΔH3

D) ΔHsoln=ΔH1ΔH2ΔH3

Show Answer

Answer:

Correct Answer: B

Solution:

For an ideal solution, ΔHmixing=0

ΔH=ΔH1+ΔH2+ΔH3 (According to Hess’s law) i.e., for ideal solutions there is no change in magnitude of the attractive forces in the two components present.



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