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The value of Trouton's ratio left( frac lambda text b text...

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Stoichiometry
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The value of Trouton's ratio $$\left( {\frac{{{\lambda _{\text{b}}}}}{{{{\text{T}}_{\text{b}}}}}} \right)$$  for a number of substances is 21 (where, $${{\lambda _{\text{b}}}}$$ = molal that of vaporisation of a substance at its normal boiling point, kcal/kg.mole and Tb = normal boiling point, °K). The Kis-tyakowsky equation is used for calculation of Trouton's ratio of __________ liquids.

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Correct Answer: Option C
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