Chemistry for Engineering Students
3rd Edition
ISBN: 9781285199023
Author: Lawrence S. Brown, Tom Holme
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Question
Chapter 13, Problem 13.33PAE
Interpretation Introduction
Interpretation:
Gold should used in pin manufacturing instead of copper. Explain.
Concept Introduction:
- Electroplating: It is a process which uses
electric current to decrease dissolved metal cations so that they produce a thin metal (coherent) coating on an electrode. - Electroplating changes the mechanical, chemical and physical properties of the workpiece.
- Electroplating of gold on nickel-plated circuits reduces the contact resistance as well as the surface hardness.
Expert Solution & Answer
Trending nowThis is a popular solution!
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
Knowledge Booster
Similar questions
- Phosphorus occurs naturally in the form of fluorapatite, CaF2 3Ca3(PO4)2. The dot indicates 1 part CaF2 to 3 parts Ca3(PO4)2. This mineral is reacted with an aqueous solution of H2SO4 in the preparation of a fertilizer. The products are phosphoric acid, hydrogen fluoride, and gypsum, CaSO4 2H2O. Write the balanced equation describing this process.arrow_forwardThree reactions very important to the semiconductor industry are The reduction of silicon dioxide to crude silicon, SiO2(s) + 2 C(s) → Si(s) + 2 CO(g) ΔrH° = 689.9 kJ/mol The formation of silicon tetrachloride from crude silicon, Si(s) + 2 Cl2(g) → SiCl4(g) ΔrH° = −657.01 kJ/mol The reduction of silicon tetrachloride to pure silicon with magnesium, SiCl4(g) + 2 Mg(s) → 2 MgCl2(s) + Si(s) ΔrH° = −625.6 kJ/mol Calculate the overall enthalpy change when 1.00 mol sand, SiO2, changes into very pure silicon by this series of reactions.arrow_forwardConsider the iron alloy described in Question 19. Suppose it is desired to prepare 1.00 kg of this alloy, what mass of each component would be necessary?arrow_forward
- Xenon trioxide, XeO3, reacts with aqueous base to form the xenate anion, HXeO4. This ion reacts further with OH to form the perxenate anion, XeO64, in the following reaction: 2HXeO4(aq)+2OH(aq)XeO64(aq)+Xe(g)+O2(g)+2H2O(l) Identify the elements that are oxidized and reduced in this reaction. You will note that the equation is balanced with respect to the number of atoms on either side. Verify that the redox part of this equation is also balanced, that is, that the extents of oxidation and reduction are also equal.arrow_forwardAssume that the radius of Earth is 6400 km, the crust is 50. km thick, the density of the crust is 3.5 g/cm3, and 25.7% of the crust is silicon by mass. Calculate the total mass of silicon in the crust of Earth.arrow_forwardWhat is G for the following reaction? 2Br(aq)+Cl2(g)Br2(l)+2Cl(aq) Use data given in Table 19.1.arrow_forward
- Iron oxide ores, commonly a mixture of FeO and Fe2O3, are given the general formula Fe3O4. They yield elemental iron when heated to a very high temperature with either carbon monoxide or elemental hydrogen. Balance the following equations for these processes: Fe3O4(s)+H2(g)Fe(s)+H2O(g)Fe3O4(s)+CO(g)Fe(s)+CO2(g)arrow_forwardNickel(II) sulfide, NiS, occurs naturally as the relatively rare mineral millerite. One of its occurrences is in meteorites. To analyze a mineral sample for the quantity of NiS, the sample is dissolved in nitric add to form a solution of Ni(NO3)2. NiS(s) + 4 HNO3(aq) Ni(NO3)2(aq) + 2 NO2(g) + 2 H2O(l) + S(s) The aqueous solution of Ni(NO3)2 is then reacted with the organic compound dimethylglyoxime (C4H8N2O2) to give the red solid Ni((C4H7N2O2)2. Ni(NO3)2(aq) + 2 (C4H8N2O2)(aq) Ni(C4H7N2O2)2 + 2 HNO3(aq) Suppose a 0.468-g sample containing millerite produces 0.206 g of red, solid Ni(C4H7N2O2)2 What is the mass percent of NiS in the sample?arrow_forward4.60 Why are fuel additives used?arrow_forward
- The carbon dioxide exhaled in the breath of astronauts is often removed from the spacecraft by reaction with lithium hydroxide 2LiOH(s)+CO2(g)Li2CO3(s)+H2O(l) Estimate the grams of lithium hydroxide required per astronaut per day. Assume that each astronaut requires 2.50 103 kcal of energy per day. Further assume that this energy can be equated to the heat of combustion of a quantity of glucose, C6H12O6, to CO2(g) and H2O(l). From the amount of glucose required to give 2.50 103 kcal of heat, calculate the amount of CO2 produced and hence the amount of LiOH required. The H for glucose(s) is 1273 kJ/mol.arrow_forwardDescribe how ultrapure silicon can be produced from sand.arrow_forwardComplete the missing information in the following skeletion equation and balance the chemical equation: NaOH(aq)+3NaCl(aq)+Al(OH)3(aq)arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
Living By Chemistry: First Edition TextbookChemistryISBN:9781559539418Author:Angelica StacyPublisher:MAC HIGHER
Chemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning
Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Living By Chemistry: First Edition Textbook
Chemistry
ISBN:9781559539418
Author:Angelica Stacy
Publisher:MAC HIGHER
Chemistry for Engineering Students
Chemistry
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning