Chemistry for Engineering Students
3rd Edition
ISBN: 9781285199023
Author: Lawrence S. Brown, Tom Holme
Publisher: Cengage Learning
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Chapter 13, Problem 13.71PAE
Interpretation Introduction
Interpretation:
The type of
Concept introduction:
Electrolytic refining: - In this process, a metal is extracted from its ionic compound by the process of electrolysis.
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Chapter 13 Solutions
Chemistry for Engineering Students
Ch. 13 - Prob. 1COCh. 13 - Prob. 2COCh. 13 - • write and balance half-reactions for simple...Ch. 13 - Prob. 4COCh. 13 - Prob. 5COCh. 13 - • use standard reduction potentials to predict the...Ch. 13 - • calculate the amount of metal plated, the amount...Ch. 13 - Prob. 8COCh. 13 - Prob. 9COCh. 13 - Prob. 10CO
Ch. 13 - Prob. 13.1PAECh. 13 - Prob. 13.2PAECh. 13 - Prob. 13.3PAECh. 13 - Prob. 13.4PAECh. 13 - For the following oxidationreduction reactions,...Ch. 13 - Prob. 13.6PAECh. 13 - Prob. 13.7PAECh. 13 - Which half-reaction takes place at the anode of an...Ch. 13 - If a salt bridge contains KNO3 as its electrolyte,...Ch. 13 - If a salt bridge contains KNO3 as its electrolyte,...Ch. 13 - The following oxidationreduction reactions are...Ch. 13 - Write a balanced chemical equation for the overall...Ch. 13 - For the reactions in parts (a) and (b) in the...Ch. 13 - Explain why the terms cell potential and...Ch. 13 - How does galvanic corrosion differ from uniform...Ch. 13 - Prob. 13.16PAECh. 13 - A student who has mercury amalgam fillings in some...Ch. 13 - Based on the cell potential measured for the cells...Ch. 13 - Prob. 13.19PAECh. 13 - Four voltaic cells are set up. In each, one...Ch. 13 - Prob. 13.21PAECh. 13 - Explain why a large negative value for the...Ch. 13 - In tables of standard reduction potentials that...Ch. 13 - In the table of standard reduction potentials,...Ch. 13 - Using values from the table of standard reduction...Ch. 13 - Using values from the table of standard reduction...Ch. 13 - One half-cell in a voltaic cell is constructed...Ch. 13 - Four metals, A, B, C, and D, exhibit the following...Ch. 13 - Use the Nernst equation to calculate the cell...Ch. 13 - One half-cell in a voltaic cell is constructed...Ch. 13 - We noted that a tin-plated steel can corrodes more...Ch. 13 - The following half-cells are available: Ag(s);...Ch. 13 - Prob. 13.33PAECh. 13 - Prob. 13.34PAECh. 13 - In May 2000, a concrete pedestrian walkway...Ch. 13 - Prob. 13.36PAECh. 13 - Prob. 13.37PAECh. 13 - Prob. 13.38PAECh. 13 - Calculate the standard free energy change for the...Ch. 13 - Suppose that you cannot find a table of standard...Ch. 13 - Prob. 13.41PAECh. 13 - Which of the following reactions is (are)...Ch. 13 - Consult a table of standard reduction potentials...Ch. 13 - The equilibrium constant for a reaction is 31015...Ch. 13 - Some calculators cannot display results of an...Ch. 13 - Calculate the equilibrium constant for the...Ch. 13 - Use the standard reduction potentials for the...Ch. 13 - Hydrogen peroxide is often stored in the...Ch. 13 - Calculate the equilibrium constant for the redox...Ch. 13 - Prob. 13.50PAECh. 13 - An engineer is assigned to design an...Ch. 13 - A magnesium bar with a mass of 6.0 kg is attached...Ch. 13 - Prob. 13.53PAECh. 13 - Prob. 13.54PAECh. 13 - Prob. 13.55PAECh. 13 - Prob. 13.56PAECh. 13 - Prob. 13.57PAECh. 13 - If you put a 9-volt battery in a smoke detector in...Ch. 13 - If alkaline batteries were not alkaline but rather...Ch. 13 - What would happen to the voltage of an alkaline...Ch. 13 - Battery manufacturers often assess batteries in...Ch. 13 - Prob. 13.62PAECh. 13 - What product forms from the lead components of a...Ch. 13 - Prob. 13.64PAECh. 13 - Prob. 13.65PAECh. 13 - Assume the specifications of a Ni-Cd voltaic cell...Ch. 13 - Prob. 13.67PAECh. 13 - What is the difference between active and passive...Ch. 13 - Prob. 13.69PAECh. 13 - Prob. 13.70PAECh. 13 - Prob. 13.71PAECh. 13 - Prob. 13.72PAECh. 13 - In an electroplating operation, the cell potential...Ch. 13 - Prob. 13.74PAECh. 13 - Prob. 13.75PAECh. 13 - Prob. 13.76PAECh. 13 - Use the Internet to find electroplating companies...Ch. 13 - Prob. 13.78PAECh. 13 - If a current of 15 A is run through an...Ch. 13 - Suppose somebody in a laboratory doesn't quite...Ch. 13 - If a barrel plating run uses 200.0 A for exactly 6...Ch. 13 - An electrical engineer is analyzing an...Ch. 13 - In a copper plating experiment in which copper...Ch. 13 - A metallurgist wants to gold-plate a thin sheet...Ch. 13 - Tin-plated steel is used for "tin" cans. Suppose...Ch. 13 - An electrolysis cell for aluminum production...Ch. 13 - If a plating line that deposits nickel (from NiCl2...Ch. 13 - Prob. 13.88PAECh. 13 - Prob. 13.89PAECh. 13 - A small part with a surface area of 2.62 cm2 is...Ch. 13 - An engineer is designing a mirror for an optical...Ch. 13 - Prob. 13.92PAECh. 13 - Prob. 13.93PAECh. 13 - What characteristic of lithium ions makes it...Ch. 13 - Looking at Figure 13.23, describe how the...Ch. 13 - Prob. 13.96PAECh. 13 - For a voltage-sensitive application, you are...Ch. 13 - Prob. 13.98PAECh. 13 - Prob. 13.99PAECh. 13 - Prob. 13.100PAECh. 13 - Prob. 13.101PAECh. 13 - 13.104 (a) What happens when a current is passed...Ch. 13 - A current is passed through a solution of...Ch. 13 - 13.106 Hydrazine, N2H4 , has been proposed as the...Ch. 13 - Prob. 13.105PAE
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Assume the following electrochemical cell simulates the galvanic cell formed by copper and zinc in seawater at pH 7.90 and 25 C. Zn | Zn(OH)2(s) | OH(aq) || Cu(OH)2(s) | Cu(s) a. Write a balanced equation for the reaction that occurs at the cathode. b. Write a balanced equation for the reaction that occurs at the anode. c. Write a balanced chemical equation for the overall reaction. d. Determine the potential (in volts) of the cell.arrow_forwardHydrazine, N2H4, has been proposed as the fuel in a fuel cell in which oxygen is the oxidizing agent. The reactions are N2H4(aq) + 4 OH(aq) N2(g) + 4 H2O() + 4e O2(g) + 2 H2O() + 4e 4 OH(aq) (a) Which reaction occurs at the anode and which at thecathode? (b) What is the overall cell reaction? (c) If the cell is to produce 0.50 A of current for 50.0 h, calculate what mass in grams of hydrazine must be present. (d) Calculate what mass (g) of O2 must be available to reactwith the mass of N2H4 determined in part (c).arrow_forwardThe commercial production of magnesium is accomplished by electrolysis of molten MgCl2. (a) Why is electrolysis of an aqueous solution of MgCl2 not used in this process? (b) Write the anode and cathode half-reaction in the electrolysis of molten MgCl2.arrow_forward
- Zinc is produced by electrolytic refining. The electrolytic process, which is similar to that for copper, can be represented by the two half-reactions Zn(impure,s)Zn2++2eZn2++2eZn(pure,s) For this process, a voltage of 3.0 V is used. How many kilowatt hours are needed to produce one metric ton of pure zinc?arrow_forwardConsider the electrolysis of water in the presence of very dilute H2SO4. What species is produced at the anode? Atthe cathode? What are the relative amounts of the speciesproduced at the two electrodes?arrow_forwardChlorine, Cl2, is produced commercially by the electrolysis of aqueous sodium chloride. The anode reaction is 2Cl(aq)Cl2(g)+2e How long will it take to produce 2.00 kg of chlorine if the current is 5.00 102 A?arrow_forward
- The metallurgy of aluminum involves electrolysis of Al2O3 dissolved in molten cryolite (Na3AlF6) at about 950 C. Aluminum metal is produced at the cathode. Predict the anode product and write equations for the reactions occurring at both electrodes.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 electroplating of a silver spoon, the spoon acts as thecathode and a piece of pure silver as the anode. Both dipinto a solution of silver cyanide (AgCN). Suppose that acurrent of 1.5 A is passed through such a cell for 22 minutesand that the spoon has a surface area of 16cm2. Calculatethe average thickness of the silver layer deposited onthe spoon, taking the density of silver to be 10.5gcm3.arrow_forward
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