Chemistry
3rd Edition
ISBN: 9780073402734
Author: Julia Burdge
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 19, Problem 7QP
What is the difference between the half-reactions discussed in redox processes in Chapter 4 and the half-cell reactions discussed in
Section 19.2?
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Chapter 19 Solutions
Chemistry
Ch. 19.1 - Prob. 1PPACh. 19.1 - Prob. 1PPBCh. 19.1 - Prob. 1PPCCh. 19.1 - Which of the following equations does not...Ch. 19.1 - MuO 4 and C 2 O react in basic solution to form...Ch. 19.2 - Practice ProblemATTEMPT Determine the overall cell...Ch. 19.2 - Practice Problem BUILD
A galvanic cell with V can...Ch. 19.2 - Prob. 1PPCCh. 19.3 - Prob. 1PPACh. 19.3 - Practice ProblemBUILD Would it be safer to store a...
Ch. 19.3 - Practice ProblemCONCEPTUALIZE A piece of nickel...Ch. 19.3 - Calculate E cell o at 25°C for a galvanic cell...Ch. 19.3 - 19.3.2 Calculate at for a galvanic cell made of a...Ch. 19.3 - 19.3.3 What redox reaction, if any. will occur at ...Ch. 19.3 - What redox reaction, if any. will occur at 25°C...Ch. 19.4 - Practice Problem ATTEMPT
Calculate for the...Ch. 19.4 - Practice ProblemBUILD The hydrazinium ion, N 2 H 5...Ch. 19.4 - Practice Problem CONCEPTUALIZE
Which of the...Ch. 19.4 - Calculate K at 25°C for the following reaction: Fe...Ch. 19.4 - 19.4.2 Calculate for the following reaction:
Ch. 19.5 - Practice ProblemATTEMPT Calculate the equilibrium...Ch. 19.5 - Practice Problem BUILD
Like equilibrium constants....Ch. 19.5 - Practice ProblemCONCEPTUALIZE Which of the...Ch. 19.5 - Calculate E at 25°C for a galvanic cell based on...Ch. 19.5 - 19.5.2 Calculate the cell potential at of a...Ch. 19.5 - 19.5.3 Calculate for a galvanic cell based on the...Ch. 19.5 - 19.5.4 Which of these would cause an increase in...Ch. 19.5 - 19.5.5 Determine the initial value of under the...Ch. 19.5 - Which of the following would cause a decrease in...Ch. 19.6 - Practice ProblemATTEMPT Will the following...Ch. 19.6 - Prob. 1PPBCh. 19.6 - Prob. 1PPCCh. 19.7 - Prob. 1PPACh. 19.7 - Prob. 1PPBCh. 19.7 - Practice Problem CONCEPTUALIZE
When the circuit in...Ch. 19.7 - 19.7.1 In the electrolysis of molten , a current...Ch. 19.7 - 19.7.2 How long will a current of 0.995 A need to...Ch. 19.7 - The diagram shows an electrolytic cell being...Ch. 19.8 - Practice Problem ATTEMPT
A constant current of...Ch. 19.8 - Practice Problem BUILD
A constant current is...Ch. 19.8 - Practice ProblemCONCEPTUALIZE The diagram on the...Ch. 19 - How much copper metal can be produced by...Ch. 19 - What mass of cadmium will be produced by...Ch. 19 - Of the following aqueous solutions, identify the...Ch. 19 - 19.4
When a current of 5.22 A is applied over 3.50...Ch. 19 - Balance the following redox equations by the...Ch. 19 - Balance the following redox equations by the...Ch. 19 - Define the following terms: anode, cathode, cell...Ch. 19 - 19.4 Describe the basic features of a galvanic...Ch. 19 - 19.5 What is the function of a salt bridge? What...Ch. 19 - What is a cell diagram? Write the cell diagram for...Ch. 19 - What is the difference between the half-reactions...Ch. 19 - Discuss the spontaneity of an electrochemical...Ch. 19 - After operating a Daniell cell (see Figure 19.1)...Ch. 19 - 19.10 Calculate the standard emf of a cell that...Ch. 19 - Calculate the standard emf of a cell that uses...Ch. 19 - Predict whether Fe 3+ can oxidize I - to I 2 under...Ch. 19 - 19.13 Which of the following reagents can oxidize ...Ch. 19 - 19.14 Consider the following...Ch. 19 - Predict whether the following reactions would...Ch. 19 - 19.16 Which species in each pair is a better...Ch. 19 - Which species in each pair is a better reducing...Ch. 19 - 19.18 Use the information in Table 2.1, and...Ch. 19 - Write the equations relating Δ G ° and K to the...Ch. 19 - Prob. 20QPCh. 19 - What is the equilibrium constant for the following...Ch. 19 - 19.22 The equilibrium constant for the...Ch. 19 - Use the standard reduction potentials to find the...Ch. 19 - Calculate △ G ° and K c for the following...Ch. 19 - Under standard-state conditions, what spontaneous...Ch. 19 - Given that E ° = 0.52 V for the reduction Cu + ( a...Ch. 19 - Write the Nernst equation, and explain all the...Ch. 19 - Write the Nernst equation for the following...Ch. 19 - What is the potential of a cell made up of Zn/Zn...Ch. 19 - 19.30 Calculate for the following cell...Ch. 19 - 19.31 Calculate the standard potential of the cell...Ch. 19 - 19.32 What is the emf of a cell consisting of a ...Ch. 19 - 19.33 Referring to the arrangement in Figure 19.1,...Ch. 19 - Calculate the emf of the following concentration...Ch. 19 - 19.35 What is a battery? Describe several types of...Ch. 19 - 19.36 Explain the differences between a primary...Ch. 19 - Discuss the advantages and disadvantages of fuel...Ch. 19 - 19.38 The hydrogen-oxygen fuel cell is described...Ch. 19 - Calculate the standard emf of the propane fuel...Ch. 19 - 19.40 What is the difference between a galvanic...Ch. 19 - 19.41 What is Faraday’s contribution to...Ch. 19 - Prob. 42QPCh. 19 - 19.43 The half-reaction at an electrode...Ch. 19 - Consider the electrolysis of molten barium...Ch. 19 - Prob. 45QPCh. 19 - 19.46 If the cost of electricity to produce...Ch. 19 - 19.47 One of the half-reactions for the...Ch. 19 - 19.48 How many faradays of electricity are...Ch. 19 - Calculate the amounts of Cu and Br 2 produced in...Ch. 19 - 19.50 In the electrolysis of an aqueous solution....Ch. 19 - 19.51 A steady current was passed through molten ...Ch. 19 - 19.52 A constant electric current flows for 3.75 h...Ch. 19 - What is the hourly production rate of chlorine gas...Ch. 19 - Chromium plating is applied by electrolysis to...Ch. 19 - 19.55 The passage of a current of 0.750 A for 25.0...Ch. 19 - A quantity of 0.300 g of copper was deposited from...Ch. 19 - 19.57 In a certain electrolysis experiment. 1.44 g...Ch. 19 - One of the half-reactions for the electrolysis of...Ch. 19 - Prob. 59QPCh. 19 - 'Galvanized iron舡 is steel sheet that has been...Ch. 19 - 19.61 Tarnished silver contains . The tarnish can...Ch. 19 - Prob. 62QPCh. 19 - For each of the following redox reactions, (i)...Ch. 19 - The oxidation of 25.0 mL of a solution containing...Ch. 19 - Prob. 65APCh. 19 - Prob. 66APCh. 19 - 19.67 The concentration of a hydrogen peroxide...Ch. 19 - Equations 18.10 and 19.3 to calculate the emf...Ch. 19 - Based on the following standard reduction...Ch. 19 - Complete the following table. State whether the...Ch. 19 - 19.71 From the following information, calculate...Ch. 19 - Consider a galvanic cell composed of the SHE and a...Ch. 19 - A galvanic cell consists of a silver electrode in...Ch. 19 - 19.74 Calculate the equilibrium constant for the...Ch. 19 - 19.75 Calculate the emf of the following...Ch. 19 - 19.76 The cathode reaction in the Leclanché cell...Ch. 19 - Prob. 77APCh. 19 - Prob. 78APCh. 19 - 19.79 A piece of magnesium metal weighing 1.56 g...Ch. 19 - Prob. 80APCh. 19 - Prob. 81APCh. 19 - In a certain electrolysis experiment involving Al...Ch. 19 - 19.83 Consider the oxidation of ammonia:
(a)...Ch. 19 - When an aqueous solution containing gold(III) salt...Ch. 19 - Prob. 85APCh. 19 - Prob. 86APCh. 19 - 19.87 Given that:
calculate and K for the...Ch. 19 - Fluorine ( F 2 ) is obtained by the electrolysis...Ch. 19 - A 300-mL solution of NaCl was electrolyzed for...Ch. 19 - A piece of magnesium ribbon and a copper wire are...Ch. 19 - An aqueous solution of a platinum salt is...Ch. 19 - Consider a galvanic cell consisting of a magnesium...Ch. 19 - Use the data in Table 19.1 to show that the...Ch. 19 - Consider the Daniell cell in Figure 19.1. When...Ch. 19 - 19.95 Explain why most useful galvanic cells give...Ch. 19 - Prob. 96APCh. 19 - 19.97 Zinc is an amphoteric metal; that is, it...Ch. 19 - Use the data in Table 19.1 to determine whether or...Ch. 19 - The magnitudes (but not the signs) of the standard...Ch. 19 - A galvanic cell is constructed as fellows. One...Ch. 19 - Given the standard reduction potential for A u 3+...Ch. 19 - Prob. 102APCh. 19 - Prob. 103APCh. 19 - A galvanic cell using Mg/Mg 2+ and Cu/Cu 2+...Ch. 19 - Prob. 105APCh. 19 - Prob. 106APCh. 19 - Prob. 107APCh. 19 - Prob. 108APCh. 19 - Prob. 109APCh. 19 - 19.110 Explain why chlorine gas can be prepared by...Ch. 19 - Prob. 111APCh. 19 - Prob. 112APCh. 19 - Prob. 113APCh. 19 - 19.114 To remove the tarnish on a silver spoon, a...Ch. 19 - 19.115 A construction company is installing an...Ch. 19 - Prob. 116APCh. 19 - Lead storage batteries are rated by ampere-hours,...Ch. 19 - Prob. 118APCh. 19 - Prob. 119APCh. 19 - Prob. 120APCh. 19 - Prob. 121APCh. 19 - Prob. 122APCh. 19 - Prob. 123APCh. 19 - Prob. 124APCh. 19 - Prob. 125APCh. 19 - 19.126 The zinc-air battery shows much promise for...Ch. 19 - 19.127 A current of 6,00 A passes through an...Ch. 19 - 19.128 solution was electrolyzed. As a result,...Ch. 19 - Prob. 129APCh. 19 - A galvanic cell is constructed by immersing a...Ch. 19 - A galvanic cell is constructed by immersing a...Ch. 19 - A galvanic cell is constructed by immersing a...
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- An aqueous solution of an unknown salt of gold is electrolyzed by a current of 2.75 amps for 3.39 hours. The electroplating is carried out with an efficiency of 93.0%, resulting in a deposit of 21.221 g of gold. a How many faradays are required to deposit the gold? b What is the charge on the gold ions (based on your calculations)?arrow_forward• write and balance half-reactions for simple redox processes.arrow_forwardGive the notation for a voltaic cell whose overall cell reaction is Mg(s)+2Ag+(aq)Mg2+(aq)+2Ag(s) What are the half-cell reactions? Label them as anode or cathode reactions. What is the standard cell potential of this cell?arrow_forward
- Identify each statement as true or false. Rewrite each false statement to make it true. (a) Oxidation always occurs at the anode of an electrochemical cell. (b) The anode of a discharging voltaic cell is the site ofreduction and is negative. (c) Standard-state conditions for electrochemical cells are aconcentration of 1.0 M for dissolved species and a pressure of 1 bar for gases. (d) The potential of a voltaic cell does not change withtemperature. (e) All product-favored oxidation-reduction reactions have astandard cell potential Ecell, with a negative sign.arrow_forwardElectrochemical Cells II Consider this cell running under standard conditions: Ni(s)Ni2(aq)Cu+(aq)Cu(s) a Is this cell a voltaic or an electrolytic cell? How do you know? b Does current flow in this cell spontaneously? c What is the maximum cell potential for this cell? d Say the cell is connected to a voltmeter. Describe what you might see for an initial voltage and what voltage changes, if any, you would observe as time went by. e What is the free energy of this cell when it is first constructed? f Does the free energy of the cell change over time as the cell runs? If so, how does it change?arrow_forwardConsider a galvanic cell based on the following half-reactions: a. What is the expected cell potential with all components in their standard states? b. What is the oxidizing agent in the overall cell reaction? c. What substances make up the anode compartment? d. In the standard cell, in which direction do the electrons flow? e. How many electrons are transferred per unit of cell reaction? f. If this cell is set up at 25C with [Fe2+] = 2.00 104 M and [La3+] = 3.00 103 M, what is the expected cell potential?arrow_forward
- Consider a galvanic cell based on the following half-reactions: a. What is the standard potential for this cell? b. A nonstandard cell is set up at 25C with [Mg2+] = 1.00 105 M. The cell potential is observed to be 4.01 V. Calculate [Au3+] in this cell.arrow_forwardA standard galvanic cell is constructed so that the overall cell reaction is 2A13++(aq)+3M(s)3M2+(aq)+2A1(s) Where M is an unknown metal. If G = 411 kJ for the overall cell reaction, identify the metal used to construct the standard cell.arrow_forwardAn electrolysis experiment is performed to determine the value of the Faraday constant (number of coulombs per mole of electrons). In this experiment, 28.8 g of gold is plated out from a AuCN solution by running an electrolytic cell for two hours with a current of 2.00 A. What is the experimental value obtained for the Faraday Constant?arrow_forward
- A potassium chloride solution is electrolyzed by passing a current through the solution using inert electrodes. A gas evolves at each electrode, and there is a large increase in pH of the solution. Write the half-reactions that occur at the anode and at the cathode.arrow_forwardUse the data from the table of standard reduction potentials in Appendix H to calculate the standard potential of the cell based on each of the following reactions. In each case, state whether the reaction proceeds spontaneously as written or spontaneously in the reverse direction under standard-state conditions. (a) H2(g)+Cl2(g)2H+(aq)+2Cl(aq) (b) Al3+(aq)+3Cr2+(aq)Al(s)+3Cr3+(aq) (c) Fe2+(aq)+Ag+(aq)Fe3+(aq)+Ag(s)arrow_forwardZinc is produced by electrolytic refining. The electrolytic process, which is similar to that for copper, can be represented by the two half-reactions Zn(impure,s)Zn2++2eZn2++2eZn(pure,s) For this process, a voltage of 3.0 V is used. How many kilowatt hours are needed to produce one metric ton of pure zinc?arrow_forward
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