Problem: The boiling point of chloroform, CHCl 3, is 61.2°C. Use Trouton’s rule to estimate the enthalpy of vaporization of chloroform.

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FREE Expert Solution

We are asked to use Trouton’s rule to estimate the enthalpy of vaporization of chloroform.

$\boxed{\mathbf{∆}{\mathbf{S}}_{\mathbf{vap}}\mathbf{ }\mathbf{=}\mathbf{ }\frac{\mathbf{∆}{\mathbf{H}}_{\mathbf{vap}}}{{\mathbf{T}}_{\mathbf{b}}}}$

Where: 

ΔS_vap = 85 J/mol-K

Calculate ΔH_vap

Given: 

ΔS_vap = 85 J/mol-K

T_b = 61.2°C + 273.15 = 334.35 K