Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Chapter 18, Problem 123AE
Interpretation Introduction
Interpretation:
The calculation of maximum amount of work done by a given cell; the reason of defining the obtained work as the maximum amount of work and the advantages and disadvantages in using fuel cells rather than corresponding combustion reactions to produce electricity is to be stated.
Concept introduction:
A fuel cell is an
To determine: The maximum useful work that can be obtained for every mole of Cadmium consumed at standard conditions is to be calculated.
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Chemistry
Ch. 18 - What is a half-reaction? Why must the number of...Ch. 18 - Galvanic cells harness spontaneous...Ch. 18 - Table 17-1 lists common half-reactions along with...Ch. 18 - Consider the equation G = -nF. What are the four...Ch. 18 - The Nernst equation allows determination of the...Ch. 18 - What are concentration cells? What is in a...Ch. 18 - Prob. 7RQCh. 18 - Prob. 8RQCh. 18 - What characterizes an electrolytic cell? What is...Ch. 18 - Prob. 1ALQ
Ch. 18 - When balancing reactions in Chapter 3, we did not...Ch. 18 - Sketch a galvanic cell, and explain how it works....Ch. 18 - In making a specific galvanic cell, explain how...Ch. 18 - Prob. 5ALQCh. 18 - Prob. 6ALQCh. 18 - Sketch a cell that forms iron metal from iron(II)...Ch. 18 - Which of the following is the best reducing agent:...Ch. 18 - You are told that metal A is a better reducing...Ch. 18 - Explain the following relationships: G and w, cell...Ch. 18 - Explain why cell potentials are not multiplied by...Ch. 18 - What is the difference between and ? When is equal...Ch. 18 - Consider the following galvanic cell: What happens...Ch. 18 - Look up the reduction potential for Fe3+ to Fe2+....Ch. 18 - If the cell potential is proportional to work and...Ch. 18 - Is the following statement true or false?...Ch. 18 - Define oxidation and reduction in terms of both...Ch. 18 - Assign oxidation numbers to all the atoms in each...Ch. 18 - Specify which of the following equations represent...Ch. 18 - The Ostwald process for the commercial production...Ch. 18 - Balance the following oxidation-reduction...Ch. 18 - Balance the following oxidation-reduction...Ch. 18 - What is electrochemistry? What are redox...Ch. 18 - Prob. 24QCh. 18 - When magnesium metal is added to a beaker of...Ch. 18 - How can one construct a galvanic cell from two...Ch. 18 - The free energy change for a reaction, G, is an...Ch. 18 - What is wrong with the following statement: The...Ch. 18 - When jump-starting a car with a dead battery, the...Ch. 18 - In theory, most metals should easily corrode in...Ch. 18 - Consider the electrolysis of a molten salt of some...Ch. 18 - Consider the following electrochemical cell: a. If...Ch. 18 - Prob. 33QCh. 18 - Prob. 34QCh. 18 - Consider the following galvanic cell: Label the...Ch. 18 - Consider the following galvanic cell: a. Label the...Ch. 18 - Sketch the galvanic cells based on the following...Ch. 18 - Sketch the galvanic cells based on the following...Ch. 18 - Calculate values for the galvanic cells in...Ch. 18 - Calculate values for the galvanic cells in...Ch. 18 - Sketch the galvanic cells based on the following...Ch. 18 - Sketch the galvanic cells based on the following...Ch. 18 - Give the standard line notation for each cell in...Ch. 18 - Give the standard line notation for each cell in...Ch. 18 - Consider the following galvanic cells: For each...Ch. 18 - Give the balanced cell equation and determine for...Ch. 18 - Calculate values for the following g cells. Which...Ch. 18 - Calculate values for the following cells. Which...Ch. 18 - Chlorine dioxide (C1O2), which is produced by the...Ch. 18 - The amount of manganese in steel is determined by...Ch. 18 - Calculate the maximum amount of work that can be...Ch. 18 - Calculate the maximum amount of work that can be...Ch. 18 - Estimate for the half-reaction 2H2O+2eH2+2OH given...Ch. 18 - The equation G = nF also can be applied to...Ch. 18 - Glucose is the major fuel for most living cells....Ch. 18 - Direct methanol fuel cells (DMFCs) have shown some...Ch. 18 - Using data from Table 17-1, place the following in...Ch. 18 - Using data from Table 17-1, place the following in...Ch. 18 - Answer the following questions using data from...Ch. 18 - Answer the following questions using data from...Ch. 18 - Consider only the species (at standard conditions)...Ch. 18 - Prob. 62ECh. 18 - Use the table of standard reduction potentials...Ch. 18 - Consider the concentration cell in Fig. 17-10. If...Ch. 18 - Consider the concentration cell shown below....Ch. 18 - Consider a concentration cell similar to the one...Ch. 18 - The overall reaction in the lead storage battery...Ch. 18 - Calculate the pH of the cathode compartment for...Ch. 18 - Consider the cell described below:...Ch. 18 - Consider the cell described below:...Ch. 18 - Calculate G and K at 25C for the reactions in...Ch. 18 - Calculate G and K at 25C for the reactions in...Ch. 18 - Consider the galvanic cell based on the following...Ch. 18 - Consider the galvanic cell based on the following...Ch. 18 - An electrochemical cell consists of a standard...Ch. 18 - Prob. 78ECh. 18 - An electrochemical cell consists of a standard...Ch. 18 - An electrochemical cell consists of a nickel metal...Ch. 18 - Consider a concentration cell that has both...Ch. 18 - You have a concentration cell in which the cathode...Ch. 18 - Under standard conditions, what reaction occurs,...Ch. 18 - A disproportionation reaction involves a substance...Ch. 18 - Consider the following galvanic cell at 25C:...Ch. 18 - An electrochemical cell consists of a silver metal...Ch. 18 - Cadmium sulfide is used in some semiconductor...Ch. 18 - For the following half-reaction, = 2.07 V:...Ch. 18 - Calculate for the following half-reaction:...Ch. 18 - The solubility product for CuI(s) is 1.1 102...Ch. 18 - How long will it take to plate out each of the...Ch. 18 - The electrolysis of BiO+ produces pure bismuth....Ch. 18 - What mass of each of the following substances can...Ch. 18 - Aluminum is produced commercially by the...Ch. 18 - Electrolysis of an alkaline earth metal chloride...Ch. 18 - What volume of F2 gas, at 25C and 1.00 atm, is...Ch. 18 - What volumes of H2(g) and O2(g) at STP are...Ch. 18 - A single HallHeroult cell (as shown in Fig. 17-22)...Ch. 18 - A factory wants to produce 1.00 103 kg barium...Ch. 18 - It took 2.30 min using a current of 2.00 A to...Ch. 18 - A solution containing Pt4+ is electrolyzed with a...Ch. 18 - A solution at 25C contains 1.0 M Cd2+, 1.0 M Ag+,...Ch. 18 - A solution at 25C contains 1.0 M Cu2 and 1.0 104...Ch. 18 - In the electrolysis of an aqueous solution of...Ch. 18 - Copper can be plated onto a spoon by placing the...Ch. 18 - Prob. 107ECh. 18 - Prob. 108ECh. 18 - What reactions take place at the cathode and the...Ch. 18 - What reaction will take place at the Cathode and...Ch. 18 - The saturated calomel electrode. abbreviated SCE....Ch. 18 - Consider the following half-reactions: Explain why...Ch. 18 - Consider the standard galvanic cell based on the...Ch. 18 - A standard galvanic cell is constructed so that...Ch. 18 - The black silver sulfide discoloration of...Ch. 18 - Prob. 116AECh. 18 - When aluminum foil is placed in hydrochloric acid,...Ch. 18 - Prob. 118AECh. 18 - Prob. 119AECh. 18 - Prob. 120AECh. 18 - A fuel cell designed to react grain alcohol with...Ch. 18 - The overall reaction and equilibrium constant...Ch. 18 - Prob. 123AECh. 18 - The overall reaction and standard cell potential...Ch. 18 - Prob. 125AECh. 18 - The ultimate electron acceptor in the respiration...Ch. 18 - One of the few industrial-scale processes that...Ch. 18 - It took 150. s for a current of 1.25 A to plate...Ch. 18 - Prob. 129AECh. 18 - In the electrolysis of a sodium chloride solution,...Ch. 18 - An aqueous solution of an unknown salt of...Ch. 18 - Which of the following statement(s) is/are true?...Ch. 18 - Consider a galvanic cell based on the following...Ch. 18 - Prob. 134CWPCh. 18 - Consider a galvanic cell based on the following...Ch. 18 - An electrochemical cell consists of a silver metal...Ch. 18 - An aqueous solution of PdCl2 is electrolyzed for...Ch. 18 - Consider the following half-reactions:...Ch. 18 - Consider the following reduction potentials: Co3++...Ch. 18 - Calculate and G for the reaction 2H2O(l) 2H2(g)...Ch. 18 - Prob. 141CPCh. 18 - The overall reaction in the lead storage battery...Ch. 18 - Consider the following galvanic cell: Calculate...Ch. 18 - A zinc-copper battery is constructed at follows at...Ch. 18 - A galvanic cell is based on the following...Ch. 18 - Consider a cell based on the following...Ch. 18 - Prob. 147CPCh. 18 - You have a concentration cell with Cu electrodes...Ch. 18 - A galvanic cell is based on the following...Ch. 18 - Given the following two standard reduction...Ch. 18 - Consider the following galvanic cell: Calculate...Ch. 18 - Prob. 152CPCh. 18 - Consider the following galvanic cell: A 15 0-mole...Ch. 18 - When copper reacts with nitric acid, a mixture of...Ch. 18 - The following standard reduction potentials have...Ch. 18 - An electrochemical cell is set up using the...Ch. 18 - Three electrochemical cells were connected in...Ch. 18 - A silver concentration cell is set up at 25C as...Ch. 18 - A galvanic cell is based on the following...Ch. 18 - The table below lists the cell potentials for the...
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- The mass of three different metal electrodes, each from a different galvanic cell, were determined before and after the current generated by the oxidation-reduction reaction in each cell was allowed to flow for a few minutes. The first metal electrode, given the label A, was found to have increased in mass; the second metal electrode, given the label B, did not change in mass; and the third metal electrode, given the label C, was found to have lost mass. Make an educated guess as to which electrodes were active and which were inert electrodes, and which were anode(s) and which were the cathode(s).arrow_forwardAn 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_forwardThe free energy change for a reaction, rG, is the maximum energy that can be extracted from the process as work, whereas rH is the total chemical potential energy change. The efficiency of a fuel cell is the ratio of these two quantities. Efficiency=rGrH100 Consider the hydrogen-oxygen fuel cell, where the net reaction is H2(g)+12O2(g)H2O(l) (a) Calculate the efficiency of the fuel cell under standard conditions. (b) Calculate the efficiency of the fuel cell if the product is water vapor instead of liquid water. (c) Does the efficiency depend on the state of the reaction product? Why or why not?arrow_forward
- Consider the following cell reaction at 25C. 2Cr(s)+3Fe2+(aq)2Cr3+(aq)+3Fe(s) Calculate the standard cell potential of this cell from the standard electrode potentials, and from this obtain G for the cell reaction. Use data in Appendix C to calculate H; note that Cr(H2O)63+(aq) equals Cr3+(aq). Use these values of H and G to obtain S for the cell reaction.arrow_forwardHydrazine, N2H4, can be used as the reducing agent in a fuel cell. N2H4(aq) + O2(aq) N2(g) + 2 H2O () (a) If rG for the reaction is 598 kJ, calculate the valueof E expected for the reaction. (b) Suppose the equation is written with all coefficients doubled. Determine rG and E for this new reaction.arrow_forwardConsider the following galvanic cell at 25C: Pt|Cr2+(0.30M),Cr3+(2.0M)||Co2+(0.20M)|Co The overall reaction and equilibrium constant value are 2Cr2+(aq)+Co2+(aq)2Cr3+(aq)+Co(s)K=2.79107 Calculate the cell potential, for this galvanic cell and G for the cell reaction at these conditions.arrow_forward
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