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STD 11 - 5. Thermodynamics and thermochemistry — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 5. Thermodynamics and thermochemistry4 Marks
MCQ
If liquids $A$ and $B$ form an ideal solution
  • A
    The free energy of mixing is zero
  • B
    The free energy as well as entropy of mixing are zero
  • ✓
    Enthalpy of mixing is zero
  • D
    The entropy of mixing is zero
✓

Answer

Correct option: C.
Enthalpy of mixing is zero
c
For an ideal solution, we know that:-

$a) \,V_{\text {mix }}=0$

$b) \,H _{\text {mix }}=0$

$c) \,\Delta G _{\operatorname{mix}}=- ve$

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