CHEMISTRY-TEXT
8th Edition
ISBN: 9780134856230
Author: Robinson
Publisher: PEARSON
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Chapter 19, Problem 19.41CP
Consider the following galvanic cell with 0.10 M concentrations:
Does the cell voltage increase, decrease, or remain the same when each of the following changes is made? Explain.
(a) 0.10 M NaCl is added to the cathode compartment.
(b) 0.10 M NaCl is added to the anode compartment.
(c) 1.0 M NH3 is added to the cathode compartment.
(d) 1.0 M NH3 is added to the anode compartment.
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Using reaction free energy to predict equilibrium composition
Consider the following equilibrium:
N2O4 (g) 2NO2 (g)
AG⁰ = 5.4 kJ
Now suppose a reaction vessel is filled with 1.68 atm of dinitrogen tetroxide (N204) at 148. °C. Answer the following questions about this system:
rise
Under these conditions, will the pressure of N2O4 tend to rise or fall?
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the minimum pressure of NO 2 needed to reverse it.
Round your answer to 2 significant digits.
yes
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0.42 atm
☑
5
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?
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Homework 13 (Ch17)
Question 4 of 4 (1 point) | Question Attempt: 2 of 2
✓ 1
✓ 2
= 3
4
Time Remaining: 4:25:54
Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction free energy of the following chemical reaction:
2CH3OH (g)+302 (g) → 2CO2 (g) + 4H₂O (g)
Round your answer to zero decimal places.
☐ kJ
x10
☐
Subm
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Identifying the major species in weak acid or weak base equilibria
Your answer is incorrect.
• Row 2: Your answer is incorrect.
• Row 3: Your answer is incorrect.
• Row 6: Your answer is incorrect.
0/5
The preparations of two aqueous solutions are described in the table below. For each solution, write the chemical formulas of the major species present at
equilibrium. You can leave out water itself.
Write the chemical formulas of the species that will act as acids in the 'acids' row, the formulas of the species that will act as bases in the 'bases' row, and the
formulas of the species that will act as neither acids nor bases in the 'other' row.
You will find it useful to keep in mind that HF is a weak acid.
acids:
HF
0.1 mol of NaOH is added to
1.0 L of a 0.7M HF
solution.
bases:
0.13 mol of HCl is added to
1.0 L of a solution that is
1.0M in both HF and KF.
Exponent
other:
F
acids: HF
bases: F
other:
K
1
0,0,...
?
000
18
Ar
Chapter 19 Solutions
CHEMISTRY-TEXT
Ch. 19 - Balance the following net ionic equation by the...Ch. 19 - Balance the following net ionic equation by the...Ch. 19 - Prob. 19.3PCh. 19 - Balance the following net ionic equation by the...Ch. 19 - Prob. 19.5PCh. 19 - Prob. 19.6ACh. 19 - PRACTICE 18.7 Write a balanced equation for the...Ch. 19 - Consider the following galvanic cell with...Ch. 19 - The standard cell potential at 25oC is 1.20 V for...Ch. 19 - The standard free-energy change is 59.8kJ for the...
Ch. 19 - Which substance is the strongest reducting agent:...Ch. 19 - Consider the following table of standard reduction...Ch. 19 - Use Table 19.1 to calculate the value of Eo for...Ch. 19 - Prob. 19.14ACh. 19 - Prob. 19.15PCh. 19 - Prob. 19.16ACh. 19 - Consider a galvanic cell that uses the reaction...Ch. 19 - Accidentally chewing on a stray fragment of...Ch. 19 - Consider the following galvanic cell: What is the...Ch. 19 - Prob. 19.20ACh. 19 - What is the pH of the solution in the anode...Ch. 19 - Prob. 19.22ACh. 19 - Use the data in Table 19.1 to calculate the...Ch. 19 - Prob. 19.24ACh. 19 - Prob. 19.25PCh. 19 - Prob. 19.26ACh. 19 - In what ways are fuel cells and batteries similar,...Ch. 19 - Prob. 19.28PCh. 19 - The cell reaction in a hydrogen—oxygen fuel cell...Ch. 19 - Prob. 19.30PCh. 19 - Prob. 19.31PCh. 19 - A steam—hydrocarbon reforming process is one...Ch. 19 - Another method of hydrogen production is the...Ch. 19 - The following picture of a galvanic cell has lead...Ch. 19 - Prob. 19.35CPCh. 19 - Prob. 19.36CPCh. 19 - Prob. 19.37CPCh. 19 - Sketch a cell with inert electrodes suitable for...Ch. 19 - Prob. 19.39CPCh. 19 - Prob. 19.40CPCh. 19 - Consider the following galvanic cell with 0.10 M...Ch. 19 - Classify each of the following unbalanced...Ch. 19 - Classify each of the following unbalanced...Ch. 19 - Prob. 19.44SPCh. 19 - Prob. 19.45SPCh. 19 - Write unbalanced oxidation and reduction...Ch. 19 - Prob. 19.47SPCh. 19 - Balance the following half-reactions. (acidic)...Ch. 19 - Prob. 19.49SPCh. 19 - Write balanced net ionic equations for the...Ch. 19 - Write balanced net ionic equations for the...Ch. 19 - Write balanced net ionic equations for the...Ch. 19 - Prob. 19.53SPCh. 19 - Why is the cathode of a galvanic cell considered...Ch. 19 - What is the function of a salt bridge in a...Ch. 19 - Describe galvanic cells that use the following...Ch. 19 - Prob. 19.57SPCh. 19 - Write a balanced equation for the overall cell...Ch. 19 - Write the shorthand notation for a galvanic cell...Ch. 19 - Write the standard shorthand notation for a...Ch. 19 - Write the standard shorthand notation for a...Ch. 19 - An H2/H+ half-cell (anode) and an Ag+/Ag half-cell...Ch. 19 - A galvanic cell is constructed from a Zn/Zn2+...Ch. 19 - Write balanced equations for the electrode and...Ch. 19 - Prob. 19.65SPCh. 19 - What conditions must be met for a cell potential E...Ch. 19 - How are standard reduction potentials defined?Ch. 19 - The silver oxide-zinc battery used in watches...Ch. 19 - The standard cell potential for a lead storage...Ch. 19 - What is the value of x for the following reaction...Ch. 19 - Prob. 19.71SPCh. 19 - Use the standard free energies of formation in...Ch. 19 - Prob. 19.73SPCh. 19 - Arrange the following oxidizing agents in order of...Ch. 19 - Prob. 19.75SPCh. 19 - Consider the following substances:...Ch. 19 - Prob. 19.77SPCh. 19 - Consider the following substances:...Ch. 19 - Prob. 19.79SPCh. 19 - Use the data in Appendix D to predict whether the...Ch. 19 - Prob. 19.81SPCh. 19 - Prob. 19.82SPCh. 19 - What reaction can occur, if any, when the...Ch. 19 - The standard potential for the following galvanic...Ch. 19 - The following reaction has an Eo value of 0.27 V:...Ch. 19 - Prob. 19.86SPCh. 19 - Prob. 19.87SPCh. 19 - Prob. 19.88SPCh. 19 - Calculate Eo and Go (in kilojoules) for the...Ch. 19 - Calculate Eo for each of the following reactions,...Ch. 19 - Calculate Eo for each of the following reactions,...Ch. 19 - Consider a galvanic cell that uses the following...Ch. 19 - Given the following half-reactions and Eo values,...Ch. 19 - Consider a galvanic cell that uses the reaction...Ch. 19 - Consider a galvanic cell based on the reaction...Ch. 19 - Prob. 19.96SPCh. 19 - Prob. 19.97SPCh. 19 - What is the Zn2+:Cu2+ concentration ratio in the...Ch. 19 - What is the Fe2+:Sn2+ concentration ratio in the...Ch. 19 - The Nernst equation applies to both cell reactions...Ch. 19 - When suspected drunk drivers are tested with a...Ch. 19 - What is the reduction potential at 25o C for the...Ch. 19 - At one time on Earth, iron was present mostly as...Ch. 19 - Standard reduction potentials for the Pb2+/Pb and...Ch. 19 - Prob. 19.105SPCh. 19 - Prob. 19.106SPCh. 19 - Prob. 19.107SPCh. 19 - Prob. 19.108SPCh. 19 - Prob. 19.109SPCh. 19 - Use the data in Table 19.1 to calculate the...Ch. 19 - From standard reduction potentials, calculate the...Ch. 19 - Calculate the equilibrium constant at 25 oC for...Ch. 19 - Calculate the equilibrium constant at 25 oC for...Ch. 19 - Prob. 19.114SPCh. 19 - Prob. 19.115SPCh. 19 - Prob. 19.116SPCh. 19 - Prob. 19.117SPCh. 19 - Write a balanced equation for the overall cell...Ch. 19 - Prob. 19.119SPCh. 19 - You are on your dream vacation at the beach when a...Ch. 19 - A storm has knocked out power to your beach house,...Ch. 19 - For a lead storage battery: (a) Sketch one cell...Ch. 19 - A mercury battery uses the following electrode...Ch. 19 - Prob. 19.124SPCh. 19 - Prob. 19.125SPCh. 19 - Prob. 19.126SPCh. 19 - Prob. 19.127SPCh. 19 - Prob. 19.128SPCh. 19 - Prob. 19.129SPCh. 19 - Prob. 19.130SPCh. 19 - If the metal zinc were not available for the...Ch. 19 - Prob. 19.132SPCh. 19 - Prob. 19.133SPCh. 19 - Prob. 19.134SPCh. 19 - Prob. 19.135SPCh. 19 - Prob. 19.136SPCh. 19 - Predict the anode, cathode, and overall cell...Ch. 19 - Prob. 19.138SPCh. 19 - Prob. 19.139SPCh. 19 - Prob. 19.140SPCh. 19 - Prob. 19.141SPCh. 19 - Prob. 19.142SPCh. 19 - What is the metal ion in a metal nitrate solution...Ch. 19 - Prob. 19.144SPCh. 19 - Prob. 19.145SPCh. 19 - Prob. 19.146SPCh. 19 - Prob. 19.147SPCh. 19 - Consider the following half-reactions and Eo...Ch. 19 - Consider a galvanic cell that uses the following...Ch. 19 - Prob. 19.150MPCh. 19 - Prob. 19.151MPCh. 19 - Prob. 19.152MPCh. 19 - Prob. 19.153MPCh. 19 - Prob. 19.154MPCh. 19 - The reaction of MnO4- with oxalic acid (H2C2O4) in...Ch. 19 - Calculate the standard reduction potential for...Ch. 19 - Prob. 19.157MPCh. 19 - Prob. 19.158MPCh. 19 - Consider a galvanic cell that utilizes the...Ch. 19 - Prob. 19.160MPCh. 19 - Prob. 19.161MPCh. 19 - Prob. 19.162MPCh. 19 - Prob. 19.163MPCh. 19 - Consider the redox titration of 100.0 mL of a...
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