Question

Use data in Figure $12-20$ to estimate (a) the normal boiling point of aniline; (b) the vapor pressure of diethyl ether at $25^{\circ} \mathrm{C}$.

Name: Problem 28, Chapter 12: General Chemistry: Principles and Modern Applications
Uploaded: 2020-09-03T12:53:58-08:00
Duration: 4 min 30 s
Channel: Shazia Naz
Description: Use data in Figure 12-20 to estimate (a) the normal boiling point of aniline; (b) the vapor pressure of diethyl ether at 25^∘ C.

   Use data in Figure $12-20$ to estimate (a) the normal boiling point of aniline; (b) the vapor pressure of diethyl ether at $25^{\circ} \mathrm{C}$.

General Chemistry: Principles and Modern Applications

Ralph H. Petrucci,… 11th Edition

Chapter 12, Problem 28

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Solved by Expert Shazia Naz

09/03/2020

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The boiling point of a substance is the temperature at which the vapor pressure of the liquid equals the atmospheric pressure. We know that the atmospheric pressure is equal to 760 mm of mercury. Show more…

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Use data in Figure $12-20$ to estimate (a) the normal boiling point of aniline; (b) the vapor pressure of diethyl ether at $25^{\circ} \mathrm{C}$.

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Key Concepts

Normal Boiling Point

The normal boiling point is the temperature at which a liquid’s vapor pressure equals the external (usually atmospheric) pressure, typically 1 atm. This concept is essential for understanding phase changes and is often determined by analyzing the vapor pressure versus temperature data.

Vapor Pressure

Vapor pressure is the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases (liquid or solid) at a given temperature. It provides insight into a substance's volatility and is crucial for predicting boiling points and condensation behavior.

Graphical Analysis of Phase Equilibria

Graphical analysis involves interpreting plots of vapor pressure versus temperature to extract key physical properties such as boiling points and vapor pressures using interpolation and the underlying principles of thermodynamics. This method often relies on the relationships described by the Clausius–Clapeyron equation.

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