please do both! Enter electrons as e".A voltaic cell is constructed in which the anode is a Cr2+|Cr3+ half cell and the cathode is a Cu Cu2+ half cell. Thehalf-cell compartments are connected by a salt bridge.(Use the lowest possible coefficients. Be sure to specify states such as (aq) or (s). If a box is not needed, leave itblank.)The anode reaction is:+The cathode reaction is:+The net cell reaction is:the Cu Cu2+ electrode.the Cr2+|Cr3+ electrodeIn the external circuit, electrons migratethe Cr2+|Cr3+ compartment.the Cu Cu2+ compartmentIn the salt bridge, anions migratePreviousNextAmore group attempts remaining mmnd I U Fur this questionEnter electrons as e".A voltaic cell is constructed in which the anode is a Cd ca2+ haif cell and the cathode is a Cu Cu2+ half cell. Thehalf-cell compartments are connected by a salt bridge.(Use the lowest possible coefficients. Be sure to specify states such as (aq) or (s). If a box is not needed, leave itblank.)The anode reaction is:The cathode reaction is:The net cell reaction is:the Cu Cu2+ electrodeV the Cd Cd2+ electrode.In the external circuit, electrons migratethe Cd Cd2+ compartmentthe Cu Cu2+ compartment.In the salt bridge, anions migrate(haNextattemnts remalning

A voltaic cell is constructed in which the anode is a Cr2+|Cr3+ half cell and the cathode is a Cu Cu2+ half cell. The half-cell compartments are connected by a salt bridge. (Use the lowest possible coefficients. Be sure to specify states such as (aq) or (s). If a box is not needed, leave it blank.) The anode reaction is: The cathode reaction is: The net cell reaction is: the Cr2+|Cr3+ electrode v the Cu Cu2+ electrode. In the external circuit, electrons migrate the Cr2+|Cr3+ compartment. the Cu Cu2+ compartment In the salt bridge, anions migrate

A voltaic cell is constructed in which the anode is a Cr2+|Cr3+ half cell and the cathode is a Cu Cu2+ half cell. The half-cell compartments are connected by a salt bridge. (Use the lowest possible coefficients. Be sure to specify states such as (aq) or (s). If a box is not needed, leave it blank.) The anode reaction is: The cathode reaction is: The net cell reaction is: the Cr2+|Cr3+ electrode v the Cu Cu2+ electrode. In the external circuit, electrons migrate the Cr2+|Cr3+ compartment. the Cu Cu2+ compartment In the salt bridge, anions migrate

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter17: Electrochemistry

Section: Chapter Questions

Problem 135CWP: Consider a galvanic cell based on the following half-reactions: a. What is the expected cell...

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Consider a voltaic cell in which the following reaction takes place in basic medium at 25°C. 2NO3-(aq)+3S2(aq)+4H2O3S(s)+2NO(g)+8OH(aq) (a) Calculate E°. (b) Write the Nernst equation for the cell E. (c) Calculate E under the following conditions: PNO=0.994atm,ph=13.7,[S2]=0.154M,[NO3-]=0.472M, .
Consider 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?
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Halide ions can he deposited at a silver anode, the reaction being Ag(s) + X- AgX(s) +e- Suppose that a cell was formed by immersing a silver anode in an analyte solution that was 0.0250 M Cl-,Br-, and I -ions and connecting the half-cell to a saturated calomel cathode via a salt bridge. (a) Which halide would form first and at what potential? Is the cell galvanic or electrolytic? (b) Could I- and Br- be separated quantitatively? (Take 1.00 l0-5 M as the criterion for quantitative removal of an ion.) If a separation is feasible, what range of cell potential could he used? (c) Repeat part (b) for I- and Cl-. (d) Repeat part (b) for Br- and Cl-.
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