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The table below represents data of vapour pressure versus temperature for benzene. Temperature, T (°C) Pressure, P (mm Hg) -36.7 1 -19.6 5 -11.5 10 -2.6 20 +7.6 40 15.4 60 26.1 100 42.2 200 60.6 400 80.1 760 The Clapeyron equation is given by where T is the absolute temperature in K and both A and B are the parameters of the equation that are typically determined by regression. The Riedel equation has the form where A, B, C, and D are parameters determined by regression. (a) Correlate the data using the Clapeyron equation using matlab. (b) Correlate the data using the Riedel equation. (c) Discuss which of the equations best fit the data.
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We can do this by adding 273.15 to each temperature value. Then, we can plot the data and use the polyfit function in MATLAB to determine the values of A and B in the Clapeyron equation. The code would look something like this: T = [309.15, 373.15, 473.15, Show more…
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The following table gives the equilibrium vapor pressure of benzene, $\mathrm{C}_{6} \mathrm{H}_{6},$ at various temperatures. (TABLE CANNOT COPY) (a) What is the normal boiling point of benzene? (b) Plot these data so that you have plot resembling the one in Figure $13.19 .$ At what temperature does the liquid have an equilibrium vapor pressure of $250 \mathrm{mm}$ Hg? At what temperature is this pressure 650 mm Hg? (c) Calculate the molar enthalpy of vaporization for benzene using the the Clausius-Clapeyron equation (Equation $13.1,$ page 612 ).
Equilibrium vapor pressures of benzene, $\mathrm{C}_{6} \mathrm{H}_{6},$ at various temperatures are given in the table. $$\begin{array}{cc} \text { Temperature }\left(^{\circ} \mathrm{C}\right) & \text { Vapor Pressure }(\mathrm{mm} \mathrm{Hg}) \\ \hline 7.6 & 40 .\\ 26.1 & 100. \\ 60.6 & 400 .\\ 80.1 & 760. \\ \hline \end{array}$$ (a) What is the normal boiling point of benzene? (b) Plot these data so that you have a graph resembling the one in Figure $11.12 .$ At what temperature does the liquid have an equilibrium vapor pressure of $250 \mathrm{mm}$ Hg? At what temperature is the vapor pressure $650 \mathrm{mm}$ Hg? (c) Calculate the molar enthalpy of vaporization for benzene using the Clausius-Clapeyron equation.
Equilibrium vapor pressures of benzene, $\mathrm{C}_{6} \mathrm{H}_{6},$ at various temperatures are given in the table. (TABLE CAN'T COPY) (a) What is the normal boiling point of benzene? (b) Plot these data so that you have a graph resembling the one in Figure $11.12 .$ At what temperature does the liquid have an equilibrium vapor pressure of $250 \mathrm{mm}$ Hg? At what temperature is the vapor pressure $650 \mathrm{mm}$ Hg? (c) Calculate the molar enthalpy of vaporization for benzene using the Clausius-Clapeyron equation.
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