What does the Antoine equation calculate?
The Antoine equation is a class of semi-empirical correlations describing the relation between vapor pressure and temperature for pure substances. The Antoine equation is derived from the Clausius–Clapeyron relation.
Does the Antoine equation use Celsius or Kelvin?
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….[edit] Units.
| A | B | C |
|---|---|---|
| 8.20417 | 1642.89 | 230.300 |
What is the enthalpy of vaporization for acetone?
31.27
Enthalpy of vaporization at standard conditions (nominally 298.15 K, 1 atm.)
| ΔvapH° (kJ/mol) | 31.27 |
|---|---|
| Method | N/A |
| Reference | Majer and Svoboda, 1985 |
Does acetone have a high vapor pressure?
intermolecular forces (acetone, gasoline, paint) and evaporate very easily, and have a high vapor pressure. boiling points because attractions are very weak. intermolecular forces (acetone, gasoline, paint) and evaporate very easily, and have a high vapor pressure.
How accurate is Antoine equation?
The Antoine equation is accurate to a few percent for most volatile substances (with vapor pressures over 10 Torr). A Java applet that converts Antoine coefficients from one system of units to another. A JavaScript calculator that estimates vapor pressure for a few common materials using the Antoine equation.
How do you find the Antoine parameters?
The easiest way to determine the Antoine constants A, B, C from experimental data is to linearly approximate the equation so that a linear plot can be made in a graph. Linear Approximation 1: Clausius-Clapeyron Equation By approximating C = 273.15, t+C can be replaced with the absolute temperature T.
What is the enthalpy of formation of acetone?
Selected ATcT enthalpy of formation based on version 1.118 of the Thermochemical Network
| Species Name | Formula | ΔfH°(298.15 K) |
|---|---|---|
| Acetone | CH3C(O)CH3 (cr,l) | -247.48 |
What is the heat capacity of acetone?
Vendors:
| Physical Properties | Metric | English |
|---|---|---|
| Heat of Fusion | 99.35 J/g | 42.74 BTU/lb |
| Heat of Vaporization | 501 J/g | 216 BTU/lb |
| 501.4 J/g | 215.7 BTU/lb | |
| Specific Heat Capacity | 2.15 J/g-°C | 0.514 BTU/lb-°F |
Why does acetone evaporate fast?
Acetone has the weakest intermolecular forces, so it evaporated most quickly. Water had the strongest intermolecular forces and evaporated most slowly.
What is the viscosity of acetone?
0.36 cP
| Physical Properties | |
|---|---|
| Viscosity | 0.36 cP at 20°C |
| Surface tension | 23.32 dyn/cm at 20°C |
| Solubility in water | Miscible in all proportions |
| Regulatory and Safety Data |
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.
Why is Antoine equation important?
Equation (2.8) (Antoine) is especially useful in correlating data taken around the atmospheric boiling point, Tb, to get a more accurate value from several experimental data points, rather than just one. It also allows data from several sources to be inter-compared, as long as they had a similar temperature range.
What is the specific heat capacity of acetone?
| Property | Value | Value |
|---|---|---|
| Heat (enthalpy) of fusion at -142 °F/-97°C | 5.7 | 42.19 |
| Heat (enthalpy) of evaporation | 31.0 | 229 |
| Specific Heat capacity, Cp (gas) | 75.0 | 0.308 |
| Specific Heat capacity, Cp (liquid) | 124.5 | 0.512 |
What happens to acetone when heated?
“Solvents like acetone evaporate more quickly when heated, which makes them more flammable. Adding warmth does make acetone work faster, but you must take more care to prevent accidental fires,” says Doug Schoon, chief scientific advisor for CND.
Does acetone evaporate 100%?
water, isopropyl alcohol, and acetone to evaporate? Water evaporates most slowly because its molecules are attracted to one another by hydrogen bonding. Acetone does not participate in hydrogen bonding, so its intermolecular forces are comparatively weaker, and it evaporates most quickly.
Does acetone float on water?
acetone float on water or will it sink if poured into water? Float, but it is miscible (can be mixed).
How do you calculate the viscosity of acetone?
Viscosity of Acetone-Water Solutions at 25°C . All liquids exhibit a resistance to flow. This proper- ty which opposes the relative motion of adjacent portions of the liquid is known as viscosity. V = πPr4t/8v1 .
Why acetone is used in viscosity experiment?
Gooey liquids such as honey, maple syrup and ketchup have high viscosity. They pour very slowly. Water or acetone (a liquid used in paint thinner and nail polish remover) have very low viscosity. You can see that because these liquids pour very quickly.
How do you use the Antoine equation for vapor pressure?
The form of the Antoine equation used here is: where P is the calculated vapor pressure in bar (on an absolute scale) and T is the temperature in Kelvin. Using the reference data assembled by NIST, you can plug in the values for A, B, and C to estimate the vapor pressure, P. Applicable Temp. Range (K)
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 are the different types of Antoine constants?
Antoine Constants 1-BUTYNE. Antoine Constants 1-HEXANOL. Antoine Constants 1-HEXENE. Antoine Constants 1-PENTENE. Antoine Constants 1-PENTYNE. Antoine Constants 2-BUTANOL. Antoine Constants 2-BUTYNE. Antoine Constants 2-CHLOROBUTANE.
What is the heat capacity of isopropyl alcohol and acetone?
Kelley, K.K. , The heat capacities of isopropyl alcohol and acetone from 16 to 298 K and the corresponding entropies and free energies , J. Am. Chem. Soc., 1929, 51, 1145-51. [ all data ] Parks, G.S.; Kelley, K.K.