How do you use the Clausius-Clapeyron equation?
The Clausius-Clapeyron equation relates the heat of vaporization and vapor pressure. The Clausius Clapeyron equation is shown below in a form similar to a linear equation (y=mx+b). Vapor pressure rises non-linearly as temperature rises since they-term in this case is a natural log of the vapor pressure.
What does the Clausius-Clapeyron equation represent?
The Clapeyron equation (also called the Clausius-Clapeyron equation) relates the slope of a reaction line on a phase diagram to fundamental thermodynamic properties.
How do you solve for temperature in Clausius-Clapeyron equation?
Problem #1: Determine ΔHvap for a compound that has a measured vapor pressure of 24.3 torr at 273 K and 135 torr at 325 K. Problem #2: A certain liquid has a vapor pressure of 6.91 mmHg at 0 °C….Solution:
| P1 = 6.91 mmHg | T1 = 0 °C = 273.15 K |
|---|---|
| P2 = 760.0 mmHg | T2 = 68.73 °C = 378.15 K |
How do you solve heat of vaporization?
Use the formula q = m·ΔHv in which q = heat energy, m = mass, and ΔHv = heat of vaporization.
What is the slope in the Clausius-Clapeyron equation?
The Clausius-Clapeyron equation also suggests that a plot of ln(p) vs. 1/T should yield a straight line, the slope of which is –ΔH/R (provided that ΔHvap is independent of temperature over the range of temperatures involved..
How do you find vaporization?
What is the Clausius Clapeyron equation used for?
Predicting Vapor Pressure. The Clausius-Clapeyron equation may be used to estimate vapor pressure as a function of temperature or to find the heat of the phase transition from the vapor pressures at two temperatures. The Clausius-Clapeyron equation is a related named for Rudolf Clausius and Benoit Emile Clapeyron.
What is P1 and P2 in the Clausius-Clapeyron equation?
where P 1 and P 2 are the vapor pressures at two temperatures T 1 and T 2. Equation 2 is known as the Clausius-Clapeyron Equation and allows us to estimate the vapor pressure at another temperature, if the vapor pressure is known at some temperature, and if the enthalpy of vaporization is known.
What is the Clausius-Clapeyron equation for J/mol?
1) Let us use the Clausius-Clapeyron Equation: with the following values: P1= 24.3 torr T1= 273 K P2= 135 torr T2= 325 K 2) Set up equation with values: ln (135/24.3) = (x / 8.31447) (1/273 minus 1/325) 1.7148 = (x / 8.31447) (0.00058608) 1.7148 = 0.000070489x x = 24327 J/mol = 24.3 kJ/mol
What is Clausius-Clapeyron?
He holds bachelor’s degrees in both physics and mathematics. The Clausius-Clapeyron equation is a relation named for Rudolf Clausius and Benoit Emile Clapeyron.