EBK CHEMICAL PRINCIPLES
8th Edition
ISBN: 9781305856745
Author: DECOSTE
Publisher: CENGAGE LEARNING - CONSIGNMENT
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 9, Problem 106AE
High-quality audio amplifiers generate large amounts of heat. To dissipate the heat and prevent damage to the electronic devices, manufacturers use heat-radiating metal fins. Would it be better to make these fins out of iron or aluminum? Why? (See
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Using reaction free energy to predict equilibrium composition
Consider the following equilibrium:
2NH3 (g) = N2 (g) +3H₂
—N2 (g) AGº = 34. kJ
Now suppose a reaction vessel is filled with 4.19 atm of ammonia (NH3) and 9.94 atm of nitrogen (N2) at 378. °C. Answer the following questions about this
system:
rise
Under these conditions, will the pressure of NH 3 tend to rise or fall?
☐ x10
fall
Х
Is it possible to reverse this tendency by adding H₂?
In other words, if you said the pressure of NH 3 will tend to rise, can that
be changed to a tendency to fall by adding H₂? Similarly, if you said the
pressure of NH3 will tend to fall, can that be changed to a tendency to
rise by adding H₂?
If you said the tendency can be reversed in the second question, calculate
the minimum pressure of H₂ needed to reverse it.
Round your answer to 2 significant digits.
yes
no
atm
00.
18
Ar
무ㅎ
?
Identifying the major species in weak acid or weak base equilibria
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.
2.2 mol of NaOH is added to
1.0 L of a 1.4M HF
solution.
acids:
П
bases:
Х
other: ☐
ப
acids:
0.51 mol of KOH is added to
1.0 L of a solution that is
bases:
1.3M in both HF and NaF.
other: ☐
00.
18
Ar
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?
x10
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
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.
yes
no
0.42 atm
☑
5
0/5
?
مله
Ar
Chapter 9 Solutions
EBK CHEMICAL PRINCIPLES
Ch. 9 - Objects placed together eventually reach the same...Ch. 9 - What is meant by the term lower in energy? Which...Ch. 9 - A fire is started in a fireplace by striking a...Ch. 9 - Liquid water turns to ice. Is this process...Ch. 9 - Consider the following statements: “Heat is a form...Ch. 9 - Prob. 6DQCh. 9 - Explain why oceanfront areas generally have...Ch. 9 - Predict the signs of q and w for the process of...Ch. 9 - Hess’s law is really just another statement of the...Ch. 9 - Prob. 10DQ
Ch. 9 - Prob. 11DQCh. 9 - Prob. 12DQCh. 9 - Prob. 13DQCh. 9 - Prob. 14DQCh. 9 - Prob. 15ECh. 9 - Consider the following potential energy diagrams...Ch. 9 - Consider an airplane trip from Chicago, Illinois,...Ch. 9 - Consider the following diagram when answering the...Ch. 9 - Assuming gasoline is pure C8H18(l) , predict the...Ch. 9 - Prob. 20ECh. 9 - Prob. 21ECh. 9 - A piston performs work of 210.Latm on the...Ch. 9 - A system undergoes a process consisting of the...Ch. 9 - Calculate the internal energy change for each of...Ch. 9 - Prob. 25ECh. 9 - Prob. 26ECh. 9 - One mole of H2O(g) at 1.00atm and 100.C occupies a...Ch. 9 - Prob. 28ECh. 9 - Prob. 29ECh. 9 - Prob. 30ECh. 9 - Prob. 31ECh. 9 - Are the following processes exothermic or...Ch. 9 - Prob. 33ECh. 9 - Prob. 34ECh. 9 - Prob. 35ECh. 9 - Prob. 36ECh. 9 - Prob. 37ECh. 9 - For the following reactions at constant pressure,...Ch. 9 - Calculate the energy required to heat 1.00kg of...Ch. 9 - Calculate q , w , E , and H for the process in...Ch. 9 - Consider 111J of heat added to 30.3g of Ne on STP...Ch. 9 - Consider a sample containing 2.00moles of a...Ch. 9 - Prob. 43ECh. 9 - The specific heat capacity of silver is...Ch. 9 - Consider the substances in Table9.3 . Which...Ch. 9 - A 150.0-g sample of a metal at 75.0C is added to...Ch. 9 - Prob. 47ECh. 9 - Prob. 48ECh. 9 - Prob. 49ECh. 9 - Prob. 50ECh. 9 - In a coffee cup calorimeter, 50.0mL of 0.100MAgNO3...Ch. 9 - In a coffee cup calorimeter, 100.0mL of 1.0MNaOH...Ch. 9 - A coffee cup calorimeter initially contains 125g...Ch. 9 - In a coffee cup calorimeter, 1.60g of NH4NO3 is...Ch. 9 - Prob. 55ECh. 9 - Consider the reaction...Ch. 9 - The heat capacity of a bomb calorimeter was...Ch. 9 - The combustion of 0.1584g benzoic acid increases...Ch. 9 - Prob. 59ECh. 9 - Calculate w and E when 1mole of a liquid is...Ch. 9 - Prob. 61ECh. 9 - Calculate H for the reaction...Ch. 9 - Given the following data:...Ch. 9 - Given the following data:...Ch. 9 - Prob. 65ECh. 9 - Given the following data:...Ch. 9 - Combustion reactions involve reacting a substance...Ch. 9 - Given the following data: 2O3(g)3O2(g)H=427kJ...Ch. 9 - Prob. 69ECh. 9 - Prob. 70ECh. 9 - Prob. 71ECh. 9 - The combustion of methane can be represented as...Ch. 9 - Prob. 73ECh. 9 - Prob. 74ECh. 9 - Calculate H for each of the following reactions...Ch. 9 - The reusable booster rockets of the space shuttle...Ch. 9 - Prob. 77ECh. 9 - Prob. 78ECh. 9 - At 298K , the standard enthalpies of formation for...Ch. 9 - Prob. 80ECh. 9 - Prob. 81ECh. 9 - The standard enthalpy of combustion of ethene gas...Ch. 9 - Prob. 83ECh. 9 - Prob. 84ECh. 9 - Prob. 85ECh. 9 - Assume that 4.19106kJ of energy is needed to heat...Ch. 9 - Prob. 87ECh. 9 - Prob. 88ECh. 9 - Prob. 89ECh. 9 - Some automobiles and buses have been equipped to...Ch. 9 - Consider the following cyclic process carried out...Ch. 9 - Determine E for the process H2O(l)H2O(g) at 25C...Ch. 9 - The standard enthalpy of formation of H2O(l) at...Ch. 9 - Prob. 94AECh. 9 - Prob. 95AECh. 9 - Prob. 96AECh. 9 - Prob. 97AECh. 9 - Prob. 98AECh. 9 - Prob. 99AECh. 9 - Prob. 100AECh. 9 - Prob. 101AECh. 9 - Prob. 102AECh. 9 - Prob. 103AECh. 9 - Prob. 104AECh. 9 - Prob. 105AECh. 9 - High-quality audio amplifiers generate large...Ch. 9 - Prob. 107AECh. 9 - Prob. 108AECh. 9 - Prob. 109AECh. 9 - Prob. 110AECh. 9 - Prob. 111AECh. 9 - Prob. 112AECh. 9 - Prob. 113AECh. 9 - Prob. 114AECh. 9 - Prob. 115AECh. 9 - The heat required to raise the temperature from...Ch. 9 - Prob. 117CPCh. 9 - Prob. 118CPCh. 9 - The heat of vaporization of water at the normal...Ch. 9 - Consider the following reaction at 248C and...Ch. 9 - Prob. 121CPCh. 9 - Prob. 122CPCh. 9 - Prob. 123CPCh. 9 - You have a 1.00-mole sample of water at -30.C ,...Ch. 9 - Prob. 125MPCh. 9 - A gaseous hydrocarbon reacts completely with...
Knowledge Booster
Learn more about
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
- 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 Check 2020 Hill LLC. All Rights Reserved. Terms of Use | Privacy Cearrow_forwardIdentifying 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 Ararrow_forwardUsing reaction free energy to predict equilibrium composition Consider the following equilibrium: 2NOCI (g) 2NO (g) + Cl2 (g) AGº =41. kJ Now suppose a reaction vessel is filled with 4.50 atm of nitrosyl chloride (NOCI) and 6.38 atm of chlorine (C12) at 212. °C. Answer the following questions about this system: ? rise Under these conditions, will the pressure of NOCI tend to rise or fall? x10 fall Is it possible to reverse this tendency by adding NO? In other words, if you said the pressure of NOCI will tend to rise, can that be changed to a tendency to fall by adding NO? Similarly, if you said the pressure of NOCI will tend to fall, can that be changed to a tendency to rise by adding NO? yes no If you said the tendency can be reversed in the second question, calculate the minimum pressure of NO needed to reverse it. Round your answer to 2 significant digits. 0.035 atm ✓ G 00. 18 Ararrow_forward
- Highlight each glycosidic bond in the molecule below. Then answer the questions in the table under the drawing area. HO- HO- -0 OH OH HO NG HO- HO- OH OH OH OH NG OHarrow_forward€ + Suppose the molecule in the drawing area below were reacted with H₂ over a platinum catalyst. Edit the molecule to show what would happen to it. That is, turn it into the product of the reaction. Also, write the name of the product molecule under the drawing area. Name: ☐ H C=0 X H- OH HO- H HO- -H CH₂OH ×arrow_forwardDraw the Haworth projection of the disaccharide made by joining D-glucose and D-mannose with a ẞ(1-4) glycosidic bond. If the disaccharide has more than one anomer, you can draw any of them. Click and drag to start drawing a structure. Xarrow_forward
- Epoxides can be opened in aqueous acid or aqueous base to produce diols (molecules with two OH groups). In this question, you'll explore the mechanism of epoxide opening in aqueous acid. 2nd attempt Be sure to show all four bonds at stereocenters using hash and wedge lines. 0 0 Draw curved arrows to show how the epoxide reacts with hydronium ion. 100 +1: 1st attempt Feedback Be sure to show all four bonds at stereocenters using hash and wedge lines. See Periodic Table See Hint H A 5 F F Hr See Periodic Table See Hintarrow_forward03 Question (1 point) For the reaction below, draw both of the major organic products. Be sure to consider stereochemistry. > 1. CH₂CH₂MgBr 2. H₂O 3rd attempt Draw all four bonds at chiral centers. Draw all stereoisomers formed. Draw the structures here. e 130 AN H See Periodic Table See Hint P C Brarrow_forwardYou may wish to address the following issues in your response if they are pertinent to the reaction(s) you propose to employ:1) Chemoselectivity (why this functional group and not another?) 2) Regioselectivity (why here and not there?) 3) Stereoselectivity (why this stereoisomer?) 4) Changes in oxidation state. Please make it in detail and draw it out too in what step what happens. Thank you for helping me!arrow_forward
- 1) Chemoselectivity (why this functional group and not another?) 2) Regioselectivity (why here and not there?) 3) Stereoselectivity (why this stereoisomer?) 4) Changes in oxidation state. Everything in detail and draw out and write it.arrow_forwardCalculating the pH at equivalence of a titration 3/5 Izabella A chemist titrates 120.0 mL of a 0.7191M dimethylamine ((CH3)2NH) solution with 0.5501 M HBr solution at 25 °C. Calculate the pH at equivalence. The pk of dimethylamine is 3.27. Round your answer to 2 decimal places. Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of HBr solution added. pH = ☐ ✓ 18 Ar Boarrow_forwardAlcohols can be synthesized using an acid-catalyzed hydration of an alkene. An alkene is combined with aqueous acid (e.. sulfuric acid in water). The reaction mechanism typically involves a carbocation intermediate. > 3rd attempt 3343 10 8 Draw arrows to show the reaction between the alkene and hydronium ion. that 2nd attempt Feedback 1st attempt تعمال Ju See Periodic Table See Hint F D Ju See Periodic Table See Hintarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Chemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage Learning
ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
Chemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage Learning
World of ChemistryChemistryISBN:9780618562763Author:Steven S. ZumdahlPublisher:Houghton Mifflin College Div
Introductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
Chemistry for Engineering Students
Chemistry
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Cengage Learning
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Chemistry: An Atoms First Approach
Chemistry
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Cengage Learning
World of Chemistry
Chemistry
ISBN:9780618562763
Author:Steven S. Zumdahl
Publisher:Houghton Mifflin College Div
Introductory Chemistry: A Foundation
Chemistry
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
The Laws of Thermodynamics, Entropy, and Gibbs Free Energy; Author: Professor Dave Explains;https://www.youtube.com/watch?v=8N1BxHgsoOw;License: Standard YouTube License, CC-BY