Answer

Correct option: D.
Gibbs free energy
(D) Gibbs free energy
Both solutions are having same composition, which is 1 mole of ' $x$ ' in 1 ' $\ell$ ' water, so all the intensive properties will remain same, but as total amount is greater in solution ' 1 ' compared to solution ' 2 '. So extensive properties will be different hence Gibbs free energy will be different.

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