Chemistry (Instructor's)
10th Edition
ISBN: 9781305957787
Author: ZUMDAHL
Publisher: CENGAGE L
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Textbook Question
Chapter 18, Problem 135CWP
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 25°C with [Mg2+] = 1.00 × 10−5 M. The cell potential is observed to be 4.01 V. Calculate [Au3+] in this cell.
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(a) The following synthesis of the molecule shown in the circle has a major problem. What is this problem? (2
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1) HBr
(no peroxides)
2) H-
NaNH2
Br
3) NaNH,
4) CH3Br
5) H2, Pd
(b) Starting with the molecule shown below and any other materials with two carbons or less, write out an
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2024 Fall Term (1) Organic Chemistry 1 (Lec)
CHEM 22204 02[6386] (Hunter College)
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alt
ons for
Free Response Questions
FRQ 1:
0/5
To spectrophotometrically determine the mass percent of cobalt in an ore containing cobalt and
some inert materials, solutions with known [Co?) are prepared and absorbance of each of the
solutions is measured at the wavelength of optimum absorbance. The data are used to create a
calibration plot, shown below.
0.90-
0.80-
0.70
0.60
0.50
0.40-
0.30
0.20-
0.10-
0.00-
0.005
0.010
Concentration (M)
0.015
A 0.630 g sample of the ore is completely dissolved in concentrated HNO3(aq). The mixture is diluted
with water to a final volume of 50.00 ml. Assume that all the cobalt in the ore sample is converted to
Co2+(aq).
a. What is the [Co2] in the solution if the absorbance of a sample of the solution is 0.74?
13
✗
b. Calculate the number of moles of Co2+(aq) in the 50.00 mL solution.
0.008 mols Co
Please correct answer and don't used hand raiting
Chapter 18 Solutions
Chemistry (Instructor's)
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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