101/1 pointYou have a sample of each of the following substances under standard conditions:Ce4+, Ce3+, Fe 2+, Fe 3+, Fe, Mg, Mg2+, Ni 2+, SnSelect all correct answersThe strongest oxidizing agent is Ce4+The strongest reducing agent is Mg2+Fe will dissolve in 1.0 M Ce4+Sn could be oxidized by H+

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Answered: 10 1/1 point You have a sample of each…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter18: Electrochemistry

Section: Chapter Questions

Problem 61E: Consider only the species (at standard conditions) Na+, Cl, Ag+, Ag, Zn2+, Zn, Pb in answering the...

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Answer the following questions using data from Table 17-1 (all under standard conditions). a. Is H+(aq) capable of oxidizing Cu(s) to Cu2+(aq)? b. Is Fe3+ (aq) capable of oxidizing I (aq)? c. Is H2(g) capable of reducing Ag+(aq)?
Use E values to predict which of the following metals, if coated on iron, will provide cathodic protection against corrosion to iron. (a) Cu (b) Mg (c) Ni (d) Sn
The saturated calomel electrode. abbreviated SCE. is often used as a reference electrode in making electrochemica1 measurements. The SCE is composed of mercury in contact with a saturated solution of calomel (Hg2Cl2). The electrolyte solution is saturated KCI. is +0.242 V relative to the standard hydrogen electrode. Calculate the potential for each of the following galvanic cells containing a saturated calomel electrode and the given half-cell components at standard conditions. In each case. indicate whether the SCE is the cathode or the anode. Standard reduction potentials are found in Table 17.1. a. Cu2++2eCu b. Fe3++e-Fe2+ c. AgCl+e-Ag+Cl- d. Al3++3eAl e. Ni2++2eNi
Consider the following metals: Ag, Au, Mg, Ni, and Zn. Which of these metals could be used as a sacri?cial anode in the cathodic protection of an underground steel storage tank? Steel is mostly iron, 50 use -0.447 V as the standard reduction potential for steel.
In biological systems, acetate ion is converted to ethyl alcohol in a two-step process: CH3COO(aq)+3H+(aq)+2eCH3CHO(aq)+H2OE=0.581V CH3CHO(aq)+2H+(aq)+2eC2H5OH(aq)E=0.197V (E°' is the standard reduction voltage at 25°C and pH of 7.00.) (a) Calculate G°' for each step and for the overall conversion. (b) Calculate E°' for the overall conversion.
You have a concentration cell with Cu electrodes and [Cu2+] = 1.00 M (right side) and 1.0 104M (left side). a. Calculate the potential for this cell at 25C. b. The Cu2+ ion reacts with NH3 to form Cu(NH3)2+ by the following equation: Cu2+(aq)+4NH3(aq)Cu(NH3)42+(aq)K=1.01013 Calculate the new cell potential after enough NH3 is added to the left cell compartment such that at equilibrium [NH3] = 2.0 M.
Consider only the species (at standard conditions) Na+, Cl, Ag+, Ag, Zn2+, Zn, Pb in answering the following questions. Give reasons for your answers. (Use data from Table 17-1.) a. Which is the strongest oxidizing agent? b. Which is the strongest reducing agent? c. Which species can be oxidized by SO42 (aq) in acid? d. Which species can be reduced by Al(s)?
An electrochemical cell consists of a standard hydrogen electrode and a copper metal electrode. a. What is the potential of the cell at 25C if the copper electrode is placed in a solution in which [Cu2+] = 2.5 104 M? b. The copper electrode is placed in a solution of unknown [Cu2+]. The measured potential at 25C is 0.195 V. What is [Cu2+]? (Assume Cu2+ is reduced.)
A solution containing a metal ion (M2+(aq)) is electrolyzed by a current of 7.8 A. After 15.5 minutes, 2.39 g of the metal is plated out. (a) How many coulombs are supplied by the battery? (b) What is the metal? (Assume 100% efficiency.)
Consider a battery made from one half-cell that consists of a capper electrode in 1 M CuSO4 solution and another half—cell that consists of a lead electrode in 1 M Pb(NO3)2 solution. (a) What are the reactions at the anode, cathode, and the overall reaction? (b) What is the standard cell potential for the battery? (c) Most devices designed to use dry-cell batteries can operate between 1.0 and 1.5 V. Could this tell he used to make a battery that could replace a dry-cell battery? Why or why not. (d) Suppose sulfuric acid is added to the half—cell with the lead electrode and some PbSO4(s) forms. Would the cell potential increase, decrease, or remain the same?

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