- Ch.1 - Introduction: Matter, Energy, and Measurement151
- Ch.2 - Atoms, Molecules, and Ions207
- Ch.3 - Chemical Reactions and Reaction Stoichiometry192
- Ch.4 - Reactions in Aqueous Solution157
- Ch.5 - Thermochemistry123
- Ch.6 - Electronic Structure of Atoms135
- Ch.7 - Periodic Properties of the Elements110
- Ch.8 - Basic Concepts of Chemical Bonding122
- Ch.9 - Molecular Geometry and Bonding Theories153
- Ch.10 - Gases139
- Ch.11 - Liquids and Intermolecular Forces77
- Ch.12 - Solids and Modern Materials94
- Ch.13 - Properties of Solutions99
- Ch.14 - Chemical Kinetics124
- Ch.15 - Chemical Equilibrium73
- Ch.16 - Acid-Base Equilibria112
- Ch.17 - Additional Aspects of Aqueous Equilibria109
- Ch.18 - Chemistry of the Environment58
- Ch.19 - Chemical Thermodynamics115
- Ch.20 - Electrochemistry102
- Ch.21 - Nuclear Chemistry67
- Ch.22 - Chemistry of the Nonmetals6
- Ch.23 - Transition Metals and Coordination Chemistry19
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry16
Chapter 19, Problem 18c
A system goes from state 1 to state 2 and back to state 1. (c) Suppose the changes in state are reversible processes. Is the work done by the system upon going from state 1 to state 2 the same or different as compared to that upon going from state 2 back to state 1?
Video transcript
Consider a process in which an ideal gas changes from state 1 to state 2 in such a way that its temperature changes from 300 K to 200 K. (a) Does the temperature change depend on whether the process is reversible or irreversible?
Consider a process in which an ideal gas changes from state 1 to state 2 in such a way that its temperature changes from 300 K to 200 K. (b) Is this process isothermal?
Consider a process in which an ideal gas changes from state 1 to state 2 in such a way that its temperature changes from 300 K to 200 K. (c) Does the change in the internal energy, ΔE, depend on the particular pathway taken to carry out this change of state?
Indicate whether each statement is true or false. (a) ΔS is a state function. (b) If a system undergoes a reversible change, the entropy of the universe increases. (c) If a system undergoes a reversible process, the change in entropy of the system is exactly matched by an equal and opposite change in the entropy of the surroundings. (d) If a system undergoes a reversible process, the entropy change of the system must be zero.
The normal boiling point of Br2(l) is 58.8 °C, and its molar enthalpy of vaporization is ΔHvap = 29.6 kJ/mol. (a) When Br2(l) boils at its normal boiling point, does its entropy increase or decrease?