Chemistry for Engineering Students
3rd Edition
ISBN: 9781285199023
Author: Lawrence S. Brown, Tom Holme
Publisher: Cengage Learning
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Question
Chapter 13, Problem 13.101PAE
Interpretation Introduction
Interpretation:
In order to minimize the amount (thus cost) of gold being used for an
Concept introduction:
- Electroplating is a process that uses
electric current to reduce the metal cations on the electrode surface which leads to plating of pure metal on the electrode.
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Are there any alternative methods better than the MOHR titration to quantitatively determine salt in a sample?
hybridization of nitrogen of complex molecules
Using reaction free energy to predict equilibrium composition
Consider the following equilibrium:
2NO2 (g) = N2O4(g)
AGº = -5.4 kJ
Now suppose a reaction vessel is filled with 4.53 atm of dinitrogen tetroxide (N2O4) at 279. °C. Answer the following questions about this system:
Under these conditions, will the pressure of N2O4 tend to rise or fall?
Is it possible to reverse this tendency by adding NO2?
In other words, if you said the pressure of N2O4 will tend to rise, can that
be changed to a tendency to fall by adding NO2? Similarly, if you said the
pressure of N2O4 will tend to fall, can that be changed to a tendency to
'2'
rise by adding NO2?
If you said the tendency can be reversed in the second question, calculate
the minimum pressure of NO 2 needed to reverse it.
Round your answer to 2 significant digits.
00
rise
☐ x10
fall
yes
no
☐ atm
G
Ar
1
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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