What is Antoine equation used for?

The Antoine equation is a semi-empirical equation which expresses vapour pressure as a function of temperature. A, new, rapid and highly accurate method for obtaining its three constants from experimental data is presented and applied to ethanol, water and 14 anaesthetic substances.

What does Dippr stand for?

Design Institute for Physical Properties
The Design Institute for Physical Properties (DIPPR®) of the American Institute of Chemical Engineers has become the premier cooperative physical property data effort in the United States to satisfy process engineering needs.

Where is the Antoine constant?

Sources for Antoine equation parameters

• NIST Chemistry WebBook.
• Dortmund Data Bank.
• Directory of reference books and data banks containing Antoine constants.
• Several reference books and publications, e. g. Lange’s Handbook of Chemistry, McGraw-Hill Professional.

What is the Wagner equation?

2. Wagner equation and objective function. The Wagner equation can be used to estimate vapour pressure for a fixed temperature value according to [6]:(1) ln P sat P c = A τ + B τ 1.5 + C τ 2.5 + D τ 5 1 – τ , where τ = 1 – T T c and Pc is the critical pressure and Tc is the critical temperature.

What are the applications of Clausius-Clapeyron equation?

The Clausius–Clapeyron equation is used to do a comparative study of the properties of the clouds that form in planetary atmospheres.

How accurate is Antoine equation?

The Antoine equation is accurate to a few percent for most volatile substances (with vapor pressures over 10 Torr).

How do you find the Antoine parameters?

This tool calculates Antoine’s coefficients from couple temperature/pressure (min, avg and max). It gives valid Antoine’s coefficient for formula log10(P)=A-B/(C+T) (log base 10) or formula ln(P)=A-B/(C+T) (natural log) depending on output scale chosen.

What is Riedel equation?

[edit] Using Riedel’s equation Tc = 647.3 K and Pc = 221.2 bar (218.3 atm), the heat of vaporization is obtained as 42,060 J/mol.

Which is Clapeyron equation?

What is the Clapeyron Equation? The reaction brucite = periclase + H2O. This reaction has a typical shape for a dehydration (or decarbonation reaction).

What is SI unit of entropy?

Entropy is a function of the state of a thermodynamic system. It is a size-extensive quantity, invariably denoted by S, with dimension energy divided by absolute temperature (SI unit: joule/K).

What is Peng Robinson equation?

Peng-Robinson Equation of State. The Peng-Robinson equation of state was used to calculate the volume of 100% methane gas as a function of pressure and temperature (Peng and Robinson, 1976). This equation expresses fluid properties in terms of the critical properties and acentric factor of each species involved.

What is the unit of pressure in Antoine equation?

mmHg
The Antoine correlation as presented in equation 8 yields vapor pressure in units of mmHg. The Antoine constants A and B are dependent upon the units of pressure (mmHg or bar) and to the logarithmic function that is employed (natural logarithm or base-10 logarithm).

What are the coefficients of the DIPPR equation?

Equation coefficients oefficients of the DIPPR equations for the calculation of vapor pressure and heat of vaporization as a function of temperature. Heat Capacity Data Equation coefficients oefficients of the DIPPR equations for the calculation of ideal gas heat capacity, liquid heat capacity, and solid heat capacity as a function of temperature.

How many thermo physical properties are there in DIPPR?

Values for 49 Thermo-physical Properties for each compound in the database Raw data and expert recommended values for 34 Constant Properties Raw literature data and expert recommended equation coefficients for 15 Temperature Dependent Properties Predicted values when experimental chemical data is not available

Is the Design Institute for physical properties DIPPR?

The “Design Institute for Physical Properties” DIPPR is a Technical Society of the American Institute of Chemical Engineers AIChE . DIPPR is one of best worldwide known sources for critically evaluated thermophysical property data. DIPPR 801 is the pure component database of DIPPR.

How many properties are in the DIPPR 801 database?

The DIPPR 801 Database is an extensive database of rigorously evaluated pure component data on industrially important chemical compounds. The Database contains: Values for 49 Thermo-physical Properties for each compound in the database Raw data and expert recommended values for 34 Constant Properties