Rearrange the Clausius-Clapeyron equation, equation 6.14 in terms of the pressure
Interpretation:
The vapor pressures of
Concept introduction:
The Clausius-Clapeyron equation can be obtained from the rearrangement and integration of Clapeyron equation. The Clausius-Clapeyron equation is generally used for gas-phase equilibria, to predict the equilibrium temperatures and pressures and also for the determination of enthalpy for phase transition.
Answer to Problem 6.70E
The plot between vapor pressure and temperature for
Figure 1
From the plot, the common observation is that for the given substances the increase in vapor pressure is slow until the normal boiling point.
Explanation of Solution
The Clausius-Clapeyron equation 6.14 is,
Rearrange the given equation for the partial pressure
Given boiling point of
Calculation of partial pressure
Calculation of partial pressure
Calculation of partial pressure
The plot between vapor pressure and temperature for
Figure 1
To observe the change in the plot of lithium, the values of vapor pressure is considered till
Figure 2
From the plot, the common observation is that for the given substances the increase in vapor pressure is slow until the normal boiling point. After the normal boiling point, the increase in vapor pressure is exponential. As the temperature increases from lower normal boiling point to higher values, the exponent value changes from negative to positive.
From the plot, the common observation is that for the given substances, the increase in vapor pressure is slow until the normal boiling point.
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