What is the enthalpy of vaporization of octane?
Enthalpy of vaporization
| ΔvapH (kJ/mol) | 34.41 |
|---|---|
| Temperature (K) | 398.8 |
| Method | N/A |
| Reference | Majer and Svoboda, 1985 |
What units is Antoine equation in?
Units. The coefficients of Antoine’s equation are normally given in mmHg—even today where the SI is recommended and pascals are preferred.
Is Antoine equation Celsius?
It is relatively easy to convert the Antoine coefficients based on using Celsius scale temperatures to make them suitable for using Kelvin scale temperatures. All that is required is to subtract 273.15 from the C coefficient.
Is enthalpy of vaporization constant?
The heat of vaporization is not a constant. It is temperature dependent as shown in Figure 1 by the example graphs of temperature versus heat of vaporization for acetone, benzene, methanol and water.
Does Antoine equation assume ideal gas?
Since the Clausius-Clapeyron equation assumes ideal gas behavior for the vapor it is not strictly accurate for all fluids.
How to use Antoine equation coefficients?
How to use Antoine Equation coefficients The coefficients given in the table below allow to calculate the saturation pressure of the pure substances listed, in mmHg, from the temperature in degree celsius. They are parameters for a modelisation of the saturation pressure as a function of the temperature following an Antoine Law .
What is the molecular weight of n-octane?
Molecular weight: 114.2285 The 3d structure may be viewed using Java or Javascript . Other names: n-Octane; n-C8H18; Oktan; Oktanen; Ottani; UN 1262 Permanent link for this species.
What are the Antoine equation constants for LogP ¼ a B?
Table A.2 gives the Antoine equation constants for logp ¼ A B T þC ; pinmmHg; T in C ðA:1Þ We often see this equation as logp ¼ A B
How many octane levels are there in the world?
n-Octane 114.231 0.4 568.7 24.9 0.256 n-Nonane 128.258 0.444 594.6 22.9 0.252 n-Decane 142.285 0.492 617.7 21.1 0.247 Isobutane 58.123 0.181 408.1 36.48 0.282