- 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 20, Problem 28c
Indicate whether each statement is true or false: (c) A salt bridge or permeable barrier is necessary to allow a voltaic cell to operate.
Video transcript
Complete and balance the following equations, and identify the oxidizing and reducing agents: MnO4-1aq2 + Br -1aq2 ¡ MnO21s2 + BrO3-1aq2 (basic solution)
Complete and balance the following equations, and identify the oxidizing and reducing agents. (Recall that the O atoms in hydrogen peroxide, H2O2, have an atypical oxidation state.) Cr2O72 - 1aq2 + CH3OH1aq2 ¡ HCOOH1aq2 + Cr3+1aq2 (acidic solution)
Complete and balance the following equations, and identify the oxidizing and reducing agents. (Recall that the O atoms in hydrogen peroxide, H2O2, have an atypical oxidation state.) H2O21aq2 + ClO21aq2 ¡ ClO2-1aq2 + O21g2 (basic solution)
A voltaic cell similar to that shown in Figure 20.5 is constructed. One electrode half-cell consists of a silver strip placed in a solution of AgNO3, and the other has an iron strip placed in a solution of FeCl2. The overall cell reaction is Fe1s2 + 2 Ag+1aq2 ¡ Fe2+1aq2 + 2 Ag1s2 (f) In which directions do the cations and anions migrate through the solution?
(a) What is the definition of the volt?
(b) Do all voltaic cells produce a positive cell potential?