Chemistry & Chemical Reactivity
9th Edition
ISBN: 9781133949640
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Textbook Question
Chapter 19, Problem 95GQ
Iron(II) ion undergoes a disproportionation reaction to give Fe(s) and the iron(III) ion. That is, iron(II) ion is both oxidized and reduced within the same reaction.
3 Fe2+(aq) ⇄ Fe(s) + 2 Fe3+(aq)
- (a) What two half-reactions make up the disproportionation reaction?
- (b) Use the values of the standard reduction potentials for the two half-reactions in part (a) to determine whether this disproportionation reaction is product-favored at equilibrium.
- (c) What is the equilibrium constant for this reaction?
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What is the value of n in the Nernst equation for the reaction Al(s) + 3 Ag⁺(aq) ⟶ 3 Ag(s) + Al³⁺(aq).
Half-reaction
E° (V)
Cr3+ (aq) + 3e → Cr (s)
|-0.74
Fe2+ (aq) + 2e –→ Fe (s)
|-0.440
Fe3+ (aq) + e → Fe2+ (s)
+0.771
Sn4+ (aq) + 2e
Sn2+ (aq) +0.154
Which of the following reactions will occur spontaneously as written?
Sn2+ (aq) + Fe2+ (s) –
→- Sn4+ (aq) + Fe3+ (ag)
2Cr (s) + 3F22+ (s) →→ 3Fe (s) + 2Cr³* (aq)
2Cr3+ (aq) + 3Sn²+ (aq) -
→→ 3Sn4+ (ag) + 2Cr (s)
3FE2+ (aq) + Cr3+ (aq) →→ Cr (s) + 3FE3+ (aq)
Sn*+ (aq) + Fe2+ (s) –
→- Sn2+ (aq) + Fe (s)
Half-reaction
E0 (V)
Cr3+(aq) + 3e- → Cr(s)
-0.74
Fe2+(aq) + 2e- → Fe(s)
-0.440
Fe3+(aq) + e- → Fe2+(aq)
+0.771
Sn4+(aq) + 2e- → Sn2+(aq)
+0.154
Determine the standard cell potential (E0cell) for the voltaic cell for this reaction below based the table above.
Sn2+(aq) + Fe3+(aq) → Fe2+(aq) + Sn4+(aq)
Chapter 19 Solutions
Chemistry & Chemical Reactivity
Ch. 19.1 - Prob. 2CYUCh. 19.1 - Prob. 3CYUCh. 19.1 - 1. Copper(II) sulfide reacts with nitric acid...Ch. 19.1 - Prob. 2RCCh. 19.1 - The balanced half-reaction for Br2 BrO3 in basic...Ch. 19.2 - Describe how to set up a voltaic cell using the...Ch. 19.2 - The following overall chemical reaction occurs in...Ch. 19.2 - Prob. 1RCCh. 19.2 - Prob. 2RCCh. 19.2 - Prob. 3RC
Ch. 19.3 - Prob. 1RCCh. 19.3 - Prob. 2RCCh. 19.4 - (a) Rank the following metals in their ability to...Ch. 19.4 - Prob. 1RCCh. 19.4 - Prob. 2RCCh. 19.4 - Prob. 3RCCh. 19.4 - Prob. 1QCh. 19.4 - Prob. 2QCh. 19.4 - Prob. 3QCh. 19.5 - A voltaic cell is set up with an aluminum...Ch. 19.5 - Check Your Understanding
The half-cells Fe2+(aq,...Ch. 19.5 - Prob. 1RCCh. 19.6 - Prob. 1CYUCh. 19.6 - Calculate the equilibrium constant at 25 C for the...Ch. 19.6 - Prob. 1RCCh. 19.7 - Predict the chemical reactions that will occur at...Ch. 19.7 - Prob. 1RCCh. 19.8 - Prob. 1CYUCh. 19.8 - 1. If you wish to convert 0.0100 mol of Au3+ (aq)...Ch. 19.8 - Prob. 1QCh. 19.8 - Use standard reduction potentials to determine...Ch. 19.8 - Prob. 3QCh. 19.8 - The overall reaction for the production of Cu(OH)2...Ch. 19.8 - Assume the following electrochemical cell...Ch. 19 - Write balanced equations for the following...Ch. 19 - Write balanced equations for the following...Ch. 19 - Balance the following redox equations. All occur...Ch. 19 - Balance the following redox equations. All occur...Ch. 19 - Balance the following redox equations. All occur...Ch. 19 - Prob. 6PSCh. 19 - A voltaic cell is constructed using the reaction...Ch. 19 - A voltaic cell is constructed using the reaction...Ch. 19 - The half-cells Fe2+(aq) | Fe(s) and O2(g) | H2O...Ch. 19 - The half cells Sn2+(aq) |Sn(s) and Cl2(g) |Cl(aq)...Ch. 19 - For each of the following electrochemical cells,...Ch. 19 - For each of the following electrochemical cells,...Ch. 19 - Use cell notation to depict an electrochemical...Ch. 19 - Use cell notation to depict an electrochemical...Ch. 19 - What are the similarities and differences between...Ch. 19 - What reactions occur when a lead storage battery...Ch. 19 - Calculate the value of E for each of the following...Ch. 19 - Calculate the value of E for each of the following...Ch. 19 - Balance each of the following unbalanced...Ch. 19 - Balance each of the following unbalanced...Ch. 19 - Consider the following half-reactions: (a) Based...Ch. 19 - Prob. 22PSCh. 19 - Which of the following elements is the best...Ch. 19 - Prob. 24PSCh. 19 - Which of the following ions is most easily...Ch. 19 - From the following list, identify the ions that...Ch. 19 - (a) Which halogen is most easily reduced in acidic...Ch. 19 - Prob. 28PSCh. 19 - Calculate the potential delivered by a voltaic...Ch. 19 - Calculate the potential developed by a voltaic...Ch. 19 - One half-cell in a voltaic cell is constructed...Ch. 19 - One half-cell in a voltaic cell is constructed...Ch. 19 - One half-cell in a voltaic cell is constructed...Ch. 19 - One half-cell in a voltaic cell is constructed...Ch. 19 - Calculate rG and the equilibrium constant for the...Ch. 19 - Prob. 36PSCh. 19 - Use standard reduction potentials (Appendix M) for...Ch. 19 - Use the standard reduction potentials (Appendix M)...Ch. 19 - Use the standard reduction potentials (Appendix M)...Ch. 19 - Use the standard reduction potentials (Appendix M)...Ch. 19 - Prob. 41PSCh. 19 - Prob. 42PSCh. 19 - Which product, O2 or F2, is more likely to form at...Ch. 19 - Which product, Ca or H2, is more likely to form at...Ch. 19 - An aqueous solution of KBr is placed in a beaker...Ch. 19 - An aqueous solution of Na2S is placed in a beaker...Ch. 19 - In the electrolysis of a solution containing...Ch. 19 - In the electrolysis of a solution containing...Ch. 19 - Electrolysis of a solution of CuSO4(aq) to give...Ch. 19 - Electrolysis of a solution of Zn(NO3)2(aq) to give...Ch. 19 - A voltaic cell can be built using the reaction...Ch. 19 - Assume the specifications of a Ni-Cd voltaic cell...Ch. 19 - Prob. 53GQCh. 19 - Balance the following equations. (a) Zn(s) +...Ch. 19 - Magnesium metal is oxidized, and silver ions are...Ch. 19 - You want to set up a series of voltaic cells with...Ch. 19 - Prob. 57GQCh. 19 - Prob. 58GQCh. 19 - In the table of standard reduction potentials,...Ch. 19 - Prob. 60GQCh. 19 - Four voltaic cells are set up. In each, one...Ch. 19 - The following half-cells are available: (i)...Ch. 19 - Prob. 63GQCh. 19 - Prob. 64GQCh. 19 - A potential of 0.142 V is recorded (under standard...Ch. 19 - Prob. 66GQCh. 19 - The standard potential, E, for the reaction of...Ch. 19 - An electrolysis cell for aluminum production...Ch. 19 - Electrolysis of molten NaCl is done in cells...Ch. 19 - A current of 0.0100 A is passed through a solution...Ch. 19 - A current of 0.44 A is passed through a solution...Ch. 19 - Prob. 72GQCh. 19 - Prob. 73GQCh. 19 - Prob. 74GQCh. 19 - The products formed in the electrolysis of aqueous...Ch. 19 - Predict the products formed in the electrolysis of...Ch. 19 - Prob. 77GQCh. 19 - The metallurgy of aluminum involves electrolysis...Ch. 19 - Prob. 79GQCh. 19 - Prob. 80GQCh. 19 - Prob. 81GQCh. 19 - Prob. 82GQCh. 19 - Two Ag+(aq) | Ag(s) half-cells are constructed....Ch. 19 - Calculate equilibrium constants for the following...Ch. 19 - Prob. 85GQCh. 19 - Use the table of standard reduction potentials...Ch. 19 - Prob. 87GQCh. 19 - Prob. 88GQCh. 19 - Prob. 89GQCh. 19 - A voltaic cell is constructed in which one...Ch. 19 - An expensive but lighter alternative to the lead...Ch. 19 - The specifications for a lead storage battery...Ch. 19 - Manganese may play an important role in chemical...Ch. 19 - Prob. 94GQCh. 19 - Iron(II) ion undergoes a disproportionation...Ch. 19 - Copper(I) ion disproportionates to copper metal...Ch. 19 - Prob. 97GQCh. 19 - Prob. 98GQCh. 19 - Consider an electrochemical cell based on the...Ch. 19 - Prob. 100ILCh. 19 - A silver coulometer (Study Question 106) was used...Ch. 19 - Four metals, A, B, C, and D, exhibit the following...Ch. 19 - Prob. 103ILCh. 19 - The amount of oxygen, O2, dissolved in a water...Ch. 19 - Prob. 105SCQCh. 19 - The free energy change for a reaction, rG, is the...Ch. 19 - Prob. 107SCQCh. 19 - (a) Is it easier to reduce water in acid or base?...Ch. 19 - Prob. 109SCQ
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