Which one is not equal to zero for an ideal solution?

Which one is not equal to zero for an ideal solution?
  1. Hmixture
  2. Smixture
  3. Vmixture
  4. P=PObserved-PRaoult

Solution

For the ideal solution
Δ H mixture =0, because new bond formed and break so no enthalpy gain or lose.
Δ S mixture >0, because randomness increasing on mixing on a solution.
Δ V mixture =0, e because no new bond is formed or broken so, no force of attraction change.
ΔP= P observed Δ P Raoult =0; vapour pressure remains the same because of no force of attraction increase or decrease.

Asked in: NEET 2015 (Phase 1)

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