Domanda del libro di testo
Consider the vaporization of liquid water to steam at a pressure of 1 atm. (b) In what temperature range is it a spontaneous process?
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Ch.19 - Chemical Thermodynamics
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement177
- Ch.2 - Atoms, Molecules, and Ions231
- Ch.3 - Chemical Reactions and Reaction Stoichiometry216
- Ch.4 - Reactions in Aqueous Solution189
- Ch.5 - Thermochemistry175
- Ch.6 - Electronic Structure of Atoms168
- Ch.7 - Periodic Properties of the Elements150
- Ch.8 - Basic Concepts of Chemical Bonding177
- Ch.9 - Molecular Geometry and Bonding Theories200
- Ch.10 - Gases179
- Ch.11 - Liquids and Intermolecular Forces113
- Ch.12 - Solids and Modern Materials154
- Ch.13 - Properties of Solutions157
- Ch.14 - Chemical Kinetics199
- Ch.15 - Chemical Equilibrium128
- Ch.16 - Acid-Base Equilibria164
- Ch.17 - Additional Aspects of Aqueous Equilibria163
- Ch.18 - Chemistry of the Environment105
- Ch.19 - Chemical Thermodynamics164
- Ch.20 - Electrochemistry171
- Ch.21 - Nuclear Chemistry122
- Ch.22 - Chemistry of the Nonmetals82
- Ch.23 - Transition Metals and Coordination Chemistry79
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry16
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232Non è quello che usi tu?Cambia libro di testo
Capitolo 19, Problema 15d
Consider the vaporization of liquid water to steam at a pressure of 1 atm. (d) At what temperature are the two phases in equilibrium?
Guida verificata passo dopo passo1
Identify the process described: vaporization of liquid water to steam at 1 atm pressure.
Recall that the temperature at which liquid water and steam are in equilibrium at 1 atm is the boiling point of water.
Understand that at equilibrium, the rate of evaporation equals the rate of condensation.
Recognize that the boiling point of water at 1 atm is a well-known value.
Conclude that the temperature at which liquid water and steam are in equilibrium at 1 atm is the boiling point of water.
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Phase Equilibrium
Phase equilibrium occurs when the rates of the forward and reverse processes of a phase change are equal, resulting in no net change in the amount of each phase. In the context of vaporization, this means that the rate at which water molecules escape from the liquid phase to the gas phase (steam) equals the rate at which gas molecules condense back into the liquid phase.
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Percorso guidato
03:22
Phase Changes in Diagrams
Vapor Pressure
Vapor pressure is the pressure exerted by a vapor in equilibrium with its liquid at a given temperature. For water, the vapor pressure increases with temperature, and at 1 atm, the temperature at which the vapor pressure of water equals the atmospheric pressure is the boiling point, which is 100°C at standard atmospheric conditions.
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02:40Raoult's Law and Vapor Pressure
Boiling Point
The boiling point of a substance is the temperature at which its vapor pressure equals the external pressure surrounding the liquid. For water at 1 atm, the boiling point is 100°C, which is the temperature at which liquid water and steam can coexist in equilibrium, allowing for the phase transition to occur.
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03:05Boiling Point Elevation
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