Joback method: Difference between revisions

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<math>C_P[\text{J}/(\text{mol}\cdot\text{K})] = \sum a_i - 37.93 + \left[ \sum b_i + 0.210 \right] T + \left[ \sum c_i - 3.91 \cdot 10^{-4} \right] T^2 + \left[\sum d_i + 2.06 \cdot 10^{-7}\right] T^3.</math>
 
The Joback method uses a four-parameter polynomial to describe the temperature dependency of the ideal-gas heat capacity. These parameters are valid from 273&nbsp;K to about 1000&nbsp;K. ButThis youcan arebe able to extend itextended to 1500K ifwith yousome don't mind a bitdegree of uncertainty here and there.
 
===Heat of vaporization at normal boiling point===