NEET2015ChemistrySolutionsActual
Which one is not equal to zero for an ideal solution?
Options
- A∆ H m i x t u r e
- B∆ S m i x t u r e
- C∆ V m i x t u r e
- D∆ P = P O b s e r v e d - P R a o u l t
Correct answer
B. ∆ S m i x t u r e
Step-by-step 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 for or break so, no force of attraction change. Δ P = P observed − Δ P Raoult = 0 ; vapour pressure remains the same because of no force of attraction increase or decrease.