Thermodynamics, Statistical Thermodynamics, & Kinetics
3rd Edition
ISBN: 9780321766182
Author: Thomas Engel, Philip Reid
Publisher: Prentice Hall
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Chapter 5, Problem 5.21CP
Can incandescent lighting be regarded as an example of cogeneration during the heating season? In a season where air conditioning is required?
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Here are some relevant excerpts from the tables of standard thermodynamic data:
Substance ΔHfo(kJ/mol)
H2O (l) -286
NO (g) 90
NO2 (g) 34
HNO3 (aq) -207
NH3 (g) -46
Find ΔHo in kJ of 4NH3(g) + 5 O2 (g) --> 4 NO (g) + 6 H2O (l)
Question 15 options:
-1540 kJ
-1172 kJ
-1892 kJ
-150 kJ
18.25
Esignments/429/tasks/368
» General Chemistry I » Assignments » Thermodynamic» Tasks
Thermodynamic
11/11 tasks attempt
A 47.5 mL solution of 0.600 M compound A is mixed with an excess of compound B solution
at 12.8 C in a styrofoam calorimeter (assume the heat capacity of the calorimeter is zero). The
chemicals react to form compound C and water, and the temperature rises to 29.7 C. If the
mass of the total reaction solution is 185 g, calculate the molar enthalpy, AH, of the reaction (in
J/mol). The specific heat capacity of the reaction solution is 4.184 J gl°C1.
AH:
J/mol
Attempt: 54 (saved 23 minutes ago)
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Chapter 5 Solutions
Thermodynamics, Statistical Thermodynamics, & Kinetics
Ch. 5 - Under what conditions is S0 for a spontaneous...Ch. 5 - Why are Sfustion and Svaporization always...Ch. 5 - An ideal gas in thermal contact with the...Ch. 5 - Prob. 5.4CPCh. 5 - Prob. 5.5CPCh. 5 - You are told that S=0 for a process in which the...Ch. 5 - Under what conditions does the equality S=H/T...Ch. 5 - Is the following statement true or false? If it is...Ch. 5 - Prob. 5.9CPCh. 5 - One Joule of work is done on a system, raising its...
Ch. 5 - Prob. 5.11CPCh. 5 - An ideal gas undergoes an adiabatic expansion into...Ch. 5 - When a saturated solution of a salt is cooled, a...Ch. 5 - Prob. 5.14CPCh. 5 - Prob. 5.15CPCh. 5 - Prob. 5.16CPCh. 5 - Why is the efficiency of a Carnot heat engine the...Ch. 5 - Two vessels of equal volume, pressure and...Ch. 5 - Solid methanol in thermal contact with the...Ch. 5 - Can incandescent lighting be regarded as an...Ch. 5 - The Chalk Point, Maryland, generating station...Ch. 5 - An electrical motor is used to operate a Carnot...Ch. 5 - An air conditioner is a refrigerator with the...Ch. 5 - Prob. 5.5NPCh. 5 - The average heat evolved by the oxidation of...Ch. 5 - Prob. 5.9NPCh. 5 - The maximum theoretical efficiency of an internal...Ch. 5 - Prob. 5.11NPCh. 5 - Prob. 5.12NPCh. 5 - Prob. 5.13NPCh. 5 - Prob. 5.14NPCh. 5 - Prob. 5.15NPCh. 5 - Prob. 5.16NPCh. 5 - Prob. 5.17NPCh. 5 - Prob. 5.18NPCh. 5 - Prob. 5.19NPCh. 5 - Prob. 5.20NPCh. 5 - Prob. 5.21NPCh. 5 - Prob. 5.22NPCh. 5 - Prob. 5.23NPCh. 5 - Prob. 5.24NPCh. 5 - Prob. 5.25NPCh. 5 - Prob. 5.26NPCh. 5 - Under anaerobic conditions, glucose is broken down...Ch. 5 - Prob. 5.28NPCh. 5 - Prob. 5.29NPCh. 5 - Prob. 5.30NPCh. 5 - Prob. 5.31NPCh. 5 - Calculate Ssurroundings and Stotal for the...Ch. 5 - A refrigerator is operated by a 0.25-hp...Ch. 5 - Prob. 5.34NPCh. 5 - Between C and 100C, the heat capacity of Hg(l) is...Ch. 5 - Prob. 5.36NPCh. 5 - Prob. 5.37NPCh. 5 - Prob. 5.38NPCh. 5 - Prob. 5.39NPCh. 5 - Prob. 5.40NPCh. 5 - Prob. 5.41NPCh. 5 - Prob. 5.42NPCh. 5 - An ideal gas sample containing 1.75 moles for...Ch. 5 - Prob. 5.44NPCh. 5 - Prob. 5.45NP
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- Explain why absolute entropies can be measured.arrow_forwardWhat is the sign of the work when a refrigerator compresses a gas (the system) to a liquid during the refrigeration cycle?arrow_forwardWhat are the two ways that a final chemical state of a system can be more probable than its initial state?arrow_forward
- The enthalpy of vaporization for water is 40.65 kJ mol-1. As a design engineer for a project in a desert climate, you are exploring the option of using evaporative cooling. (a) If the air has an average volumetric heat capacity of 0.00130 J cm-3 K-1, what is the minimum mass of water that would need to evaporate in order to cool a 5 m? 5 m room with a 3 m ceiling by 5°F using this method? (b) Is this a spontaneous or nonspontaneous process?arrow_forwardWould the amount of heat absorbed by the dissolution in Example 5.6 appear greater, lesser, or remain the same if the heat capacity of the calorimeter were taken into account? Explain your answer.arrow_forward(d) If the mass of the metal is 196 grams, what is its specific heat capacity?(e) What is the change of water’s entropy? Note the volume of water stays the same.(f) What is the change of total entropy of the system, including both water and metal?arrow_forward
- Wile E. Coyote has just bought a fresh batch of ACME brand trinitrotoluene (TNT) to stop that pesky Roadrunner once and for all! If the temperature outside is 281.35 K, what will be the total work associated with the detonation of TNT when this inevitably blows up in Wile E. Coyote's face? C7H;N3O6(8) – N2(9) + H2(9) + 3 O2(g) + 7 C(s) Express your answer using four significant figures. 2) ? kJ mol-1arrow_forward15.) Which of the following systems has the greatest change in internal energy? A.) A mixing of two ideal diatomic gases with equimolar amount and the same temperature and pressure. B.) An isolated container that contains two gases of different pressures separated by a frictionless and movable piston. The gases are allowed to reach a mechanical equilibrium. C.) Two blocks of similar metal that are in contact in an isolated container, one block metal has a temperature of 100°C while the other block of metal has a temperature of 20°C. The two blocks of metals are allowed to reach thermal equilibrium. D.) An ideal gas that was allowed to expand freely and adiabatically. E.) None of these.arrow_forward4..12) A quantity of 35.0 g of water at 25.0 C (called A) is mixed with 160.0 g of water at 86.0 C (called B). (a) Calculate the final temperature of the system, assuming that the mixing is carried out adibatically. (b) Calculate the entropy change of A, B, and the entire system.arrow_forward
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