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Mostrando entradas de agosto, 2020

Antoine constant's conversion

Abstract Sometimes we need a vapor pressure equation of one specific compound in certain units, and we find it in another. It's actually easy use the equation as it is, converting input variable (generally temperature, but it could be pressure) into default units, and then converting the output variable into the desired units. But, some times, for programming reasong and even using some specific software, one wants to have all the constants in certain specific units. Procedure Lets develope a general conversion of the units of the well-known Anotoine's vapor pressure equation. \[\log_a \left(p^\text{v}_0\right) = A_0 - \frac{B_0}{T_0 + C_0} \tag{1} \] where \(p^\text{v}_0\) is the vapor pressure in units of PU 0 , and \(T\) is the temperature in units of TU 0 . \(A_0\), \(B_0\), and \(C_0\) are the initial values of Antoine's equations, from whom \(B_0\) and \(C_0\) must be in TU 0 . Moreover, the logarithm of pressure is in a generic a base because it could be decimal or...