Would you expect water to obey trouton rule

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Reference no: EM131026812

Most liquids follow Trouton's rule, which states that the molar entropy of vaporization lies in the range of 88 ± J/mol-K. The normal boiling points and enthalpies of vaporization of several organic liquids are as follows:

Substance	Normal Boiling Point (°C)	ΔHvap (kJ/mol)
Acetone, (CH₃)₂CO	56.1	29.1
Dimethyl ether, (CH₃)₂O	-24.8	21.5
Ethanol, C₂H₅OH	78.4	38.6
Octane, C₅H₁₈	125.6	34.4
Pyridine, C₅H₅N	115.3	35.1

(a) Calculate ?Svap for each of the liquids. Do all the liquids obey Trouton's rule?

(b) With reference to intermolecular forces, can you explain any exceptions to the rule?

(d) Chlorobenzene (C6H5Cl) boils at 131.8 °C. Use Trouton's rule to estimate ?Hvap for this substance.

Reference no: EM131026812

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