Trouton's ratio is given by (where λb, = molal heat of vaporisation of a substance at its normal boiling point, kcal/kmol Tb = normal boiling point, °K) ___________________?
Correct answer: C. λb/Tb
- A. √(λb/Tb)
- B. Tb/λb
- C. λb/Tb
- D. √(Tb/λb)
Explanation
Trouton’s ratio is the molal latent heat of vaporisation divided by the absolute normal boiling temperature, λb/Tb. Its approximate value is about 21 kcal/(kmol·K) for many ordinary liquids.
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