Chemistry (OER)
2nd Edition
ISBN: 9781947172616
Author: OpenStax
Publisher: OpenStax College
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Textbook Question
Chapter 17, Problem 20E
An active (metal) electrode was found to gain mass as the
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Chapter 17 Solutions
Chemistry (OER)
Ch. 17 - If a 2.5 A current is run through a circuit for 35...Ch. 17 - For the scenario in the previous question, how...Ch. 17 - For each of the following balanced half-reactions,...Ch. 17 - For each of the following balanced half-reactions,...Ch. 17 - Given the following pairs of balanced...Ch. 17 - Balance the following in acidic solution: (a)...Ch. 17 - Identify the species that undergoes oxidation, the...Ch. 17 - Balance the following in acidic solution: (a)...Ch. 17 - Identify the species that was oxidized, the...Ch. 17 - Why is it not possible for hydroxide ion (OH-) to...
Ch. 17 - Why is it not possible for hydrogen ion (H+) to...Ch. 17 - Why must the charge balance in oxidation-reduction...Ch. 17 - Write the following balanced reactions using cell...Ch. 17 - Given the following cell notations, determine the...Ch. 17 - For the cell notations in the previous problem,...Ch. 17 - Balance the following reactions and write the...Ch. 17 - Identify the species oxidized species reduced, and...Ch. 17 - From the information provided, use cell notation...Ch. 17 - Why is a salt bridge necessary in galvanic cells...Ch. 17 - An active (metal) electrode was found to gain mass...Ch. 17 - An active (metal) electrode was found to lose mass...Ch. 17 - The mass of three different metal electrodes, each...Ch. 17 - For each reaction listed, determine its standard...Ch. 17 - For each reaction listed, determine its standard...Ch. 17 - Determine the overall reaction and its standard...Ch. 17 - Determine the overall reaction and its standard...Ch. 17 - Determine the overall reaction and its standard...Ch. 17 - Determine the overall reaction and its standard...Ch. 17 - For the standard cell potentials given here,...Ch. 17 - For the ?G values given here, determine the...Ch. 17 - Determine the standard cell potential and the cell...Ch. 17 - Determine G and G for each of the reactions in...Ch. 17 - Use the data in Appendix L to determine the...Ch. 17 - What are the desirable qualities of an electric...Ch. 17 - List some things that are typically considered...Ch. 17 - Consider a battery made from one half-cell that...Ch. 17 - Consider a battery with the overall reaction:...Ch. 17 - An inventor proposes using a SHE (standard...Ch. 17 - Why do batteries go dead, but fuel cells do not?Ch. 17 - Explain what happens to battery voltage as a...Ch. 17 - Using the information thus far in this chapter,...Ch. 17 - Which member of each pair of metals is more likely...Ch. 17 - Consider the following metals: Ag, Au, Mg, Ni, and...Ch. 17 - Aluminum (E Al 3+/Al=2.07V) is more easily...Ch. 17 - If a sample of iron and a sample of zinc come into...Ch. 17 - Suppose you have three different metals. A, B, and...Ch. 17 - Why would a sacrificial anode made of lithium...Ch. 17 - Identify the reaction at the anode, reaction at...Ch. 17 - What mass of each product is produced in each of...Ch. 17 - How long would it take to reduce 1 mole of each of...Ch. 17 - A current of 2.345 A passes through the cell shown...Ch. 17 - An irregularly shaped metal part made from a...
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- The following two half-reactions arc involved in a voltaic cell. At standard conditions, what species is produced at each electrode? Ag++eAgE=0.80VNi2++2eNiE=0.25Varrow_forwardA 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_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_forward
- Electrochemical 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_forwardA factory wants to produce 1.00 103 kg barium from the electrolysis of molten barium chloride. What current must be applied for 4.00 h to accomplish this?arrow_forward. In which direction do electrons flow in a galvanic cell, from anode to cathode or vice versa?arrow_forward
- Consider 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_forwardAs an example of an electrolytic cell, the text states: Sodium chloride is electrolyzed commercially in an apparatus called the Downs cell to produce sodium and chlorine. This is a high-temperature operation; the electrolyte is molten NaCl. Write the half-reaction equations for the changes taking place at each electrode. Is the electrode at which sodium is produced the anode or the cathode? The Downs cell electrolyzes molten melted sodium chloride, producing sodium and chlorine.arrow_forwardA solution of copper(II) sulfate is electrolyzed by passing a current through the solution using inert electrodes. Consequently, there is a decrease in the Cu2+ concentration and an increase in the hydronium ion concentration. Also, one electrode increases in mass and a gas evolves at the other electrode. Write half-reactions that occur at the anode and at the cathode.arrow_forward
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