Chemistry Chemistry Practice Problems Solutions Library

Second and Third Laws of Thermodynamics Solutions Library

Access 46 Second and Third Laws of Thermodynamics video and text solutions to help you complete your homework. Need to revisit the concept? Watch our Second and Third Laws of Thermodynamics learn videos.

Browse Solutions

46 solutions

Second and Third Laws of Thermodynamics

Q. What is a closed system?a. A closed system can exchange heat but not mass with its surroundings.b. A closed system can't exchange heat and mass wit...

Solved • Jun 30, 2020

Second and Third Laws of Thermodynamics

Q. What is meant by the term system in thermodynamics?

Solved • Jun 30, 2020

Second and Third Laws of Thermodynamics

Q. Consider the following reaction at 298 K: C(graphite) + 2H2(g) → CH4(g)       ΔH° = -74.6 kJCalculate the following quantities.ΔSsys = ___ J/KΔSsur...

Solved • Mar 13, 2020

Second and Third Laws of Thermodynamics

Q. What is the third law of thermodynamics?

Solved • Jan 28, 2020

Second and Third Laws of Thermodynamics

Q. How do molecules move as a solid, liquid, and gas?

Solved • Aug 7, 2019

Second and Third Laws of Thermodynamics

Q. The second law of thermodynamics leads us to conclude what?a. the total energy of the universe is constantb. disorder in the universe is increasing...

Solved • Aug 2, 2019

Second and Third Laws of Thermodynamics

Q. Indicate whether each statement is true or false.The second law of thermodynamics says that entropy is conserved.

Solved • Jan 3, 2019

Second and Third Laws of Thermodynamics

Q. Indicate whether each statement is true or false.If the entropy of the system increases during a reversible process, the entropy change of the surr...

Solved • Jan 3, 2019

Second and Third Laws of Thermodynamics

Q. Indicate whether each statement is true or false."Translational motion" of molecules refers to their change in spatial location as a function of time.

Solved • Jan 3, 2019

Second and Third Laws of Thermodynamics

Q. Indicate whether each statement is true or false."Rotational" and "vibrational" motions contribute to the entropy in atomic gases like He and Xe.

Solved • Jan 3, 2019

Second and Third Laws of Thermodynamics

Q. Entropy and the phases of water. The larger the number of possible microstates, the higher the entropy of the system.In which phase are water molec...

Solved • Jan 3, 2019

Second and Third Laws of Thermodynamics

Q. Does the entropy of the surroundings increase for spontaneous processes?

Solved • Jan 3, 2019

Second and Third Laws of Thermodynamics

Q. The rusting of iron is spontaneous and is accompanied by a decrease in the entropy of the system (the iron and oxygen).What can we conclude about t...

Solved • Jan 3, 2019

Second and Third Laws of Thermodynamics

Q. Consider the reaction between nitrogen and oxygen gas to form dinitrogen monoxide: 2 N2(g) + O2(g)  →  2 N2O(g), ΔHrxn = + 163.2 kJDetermine the si...

Solved • Jan 3, 2019

Second and Third Laws of Thermodynamics

Q. Indicate the sign of ΔSuniv for each process: 2H2(g) + O2 (g) → 2 H2O(l) at 298 K

Solved • Jan 3, 2019

Second and Third Laws of Thermodynamics

Q. What is the molar entropy of a pure crystal at 0 K?

Solved • Jan 3, 2019

Second and Third Laws of Thermodynamics

Q. Do biological systems contradict the second law of thermodynamics? By taking energy from their surroundings and synthesizing large, complex biologi...

Solved • Jan 3, 2019

Second and Third Laws of Thermodynamics

Q. Some water is placed in a coffee-cup calorimeter. When 1.0 g of an ionic solid is added, the temperature of the solution increases from 21.5°C to 2...

Solved • Dec 3, 2018

Second and Third Laws of Thermodynamics

Q. Is the statement true or false? If false, correct it.(h) Both ΔSsys and ΔSsurr equal zero at equilibrium.

Solved • Nov 28, 2018

Second and Third Laws of Thermodynamics

Q. Can an argon atom undergo vibrational motion?a. Yes.b. No.

Solved • Mar 28, 2018

Second and Third Laws of Thermodynamics

Q. Which of the following are always true for a spontaneous process?I. ΔSsys > 0 II. ΔSsurr > 0 III. ΔSuniv > 0 IV. ΔGsys > 0a. Ib. IIc. I...

Solved • Mar 20, 2018

Second and Third Laws of Thermodynamics

Q. The second law of thermodynamics states thata. the entropy of a perfect crystal is zero at 0K.b. the entropy of the universe is constant.c. the ene...

Solved • Mar 20, 2018

Second and Third Laws of Thermodynamics

Q. Define the following:a) Second Law of Thermodynamicsb) triple point

Solved • Oct 31, 2017

Second and Third Laws of Thermodynamics

Q. For which of the following pure chemical substances (in the form of a perfect crystal) will S° = 0.00 J/mol.K at absolute zero?a) Cub) O2c) CuO2d) ...

Solved • Oct 31, 2017

Second and Third Laws of Thermodynamics

Q. Which of the following is always positive when a spontaneous process occurs? a. ΔSsystem b. ΔSsurroundings c. ΔSuniverse d. ΔHuniverse e. ΔHsu...

Solved • Oct 17, 2017

Second and Third Laws of Thermodynamics

Q. What are the signs of ∆Ssurr, ∆Ssys, and ∆Suniv, respectively, for a spontaneous endothermic reaction?1. Cannot be predicted with certainty from th...

Solved • Jun 22, 2017

Second and Third Laws of Thermodynamics

Q. According to the Second Law of Thermodynamics, for any spontaneous process 1. The entropy of the system will decrease. 2. The total entropy of th...

Solved • Jun 22, 2017

Second and Third Laws of Thermodynamics

Q. The law states that a substance that is perfectly crystaline at 0 K has an entropy of zero. This law is called1. the second law of thermodynamics.2...

Solved • Jun 21, 2017

Second and Third Laws of Thermodynamics

Q. Which of the following are always true for spontaneous processes: I. ΔSuniverse ˃ 0 II. ΔSsystem ˃ 0 III. ΔSsystem + ΔSsurroundings ˃ 0 A. Only...

Solved • Apr 20, 2017

Second and Third Laws of Thermodynamics

Q. Entropy of the Universe will increase for all but which of the following? A)        H2O(s)  →  H2O(l)                       T = 233 K B)        H...

Solved • Nov 16, 2016

Second and Third Laws of Thermodynamics

Q. What is the sign of ΔS univ for a biological system? A) zero B) negative C) positive D) It depends on the biological system.  

Solved • Aug 29, 2016

Second and Third Laws of Thermodynamics

Q. What is the sign of ΔSuniv when a protein folds into its specific functional native structure starting from a random structure? A) zero B) negati...

Solved • Aug 28, 2016

Second and Third Laws of Thermodynamics

Q. The Entropy change of the Universe is A) Always equal to ΔSsurr B) Always the difference between the System and the Surroundings C) is only posi...

Solved • Aug 28, 2016

Second and Third Laws of Thermodynamics

Q. What term is given to the fact that the entropy of a perfect crystalline solid is zero at absolute zero? A) First Law of Thermodynamics B) Second...

Solved • Aug 27, 2016

Second and Third Laws of Thermodynamics

Q. Which of the following is true for a system at equilibrium? A) ΔS°sys = ΔS°surr B) ΔS°sys = - ΔS°surr C) ΔS°sys = ΔS°surr = 0 D) ΔS°univ > 0...

Solved • Aug 27, 2016

Second and Third Laws of Thermodynamics

Q. A certain process has ΔSuniv > 0 at 25°C. What does one know about the prrocess? A) It is exothermic. B) It is endothermic. C) It is spontane...

Solved • Aug 27, 2016

Second and Third Laws of Thermodynamics

Q. The diagram below depicts the spontaneous sublimation of I2 (s) at 25°C and 1 atm: Accordingly, ΔSsys is ______ , ΔSsurr is _______, and ΔStotal i...

Solved • May 17, 2016

Second and Third Laws of Thermodynamics

Q. Which of the following relationships must be true of any reaction at equilibrium? a) ∆Suniv = 0 b) ∆G ̊ = 0 c) ∆S ̊ = 0 d) Both a and b e) All...

Solved • Mar 31, 2016

Second and Third Laws of Thermodynamics

Q. What is the second law of thermodynamics? (circle one) Change of entropy of the universe is conserved for a spontaneous process. Change of entrop...

Solved • Mar 17, 2016

Second and Third Laws of Thermodynamics

Q. Which of the following are always true for spontaneous processes:                         I.  ΔSuniverse > 0                         II.  ΔSsy...

Solved • Mar 9, 2016

Second and Third Laws of Thermodynamics

Q. The Three Laws of Thermodynamics are as follows: 1. The total ____________ of the universe is constant. 2. The total ___________ of the universe ...

Solved • Feb 23, 2016

Second and Third Laws of Thermodynamics

Q. Physical processes, including chemical reactions, tend to go towards ________ entropy and _________ energy.  The answers in order are (a) lower, ...

Solved • Feb 23, 2016

Second and Third Laws of Thermodynamics

Q. What is true of the entropy of the universe? a. conserved b. continually decreasing c. continually increasing d. equal to zero e. equal to the...

Solved • Feb 21, 2016

Second and Third Laws of Thermodynamics

Q. Which of the following is always positive when a spontaneous process occurs? a. ΔSsystem b. ΔSsurroundings c. ΔSuniverse d. ΔHuniverse e. ΔHsu...

Solved • Feb 21, 2016

Second and Third Laws of Thermodynamics

Q. Which is NOT a consequence of the second law of thermodynamics?1. Heat spontaneously flows from a warmer body to a colder body.2. When a book falls...

Solved • Feb 21, 2016

Second and Third Laws of Thermodynamics

Q. Which of the following statements regarding the third law of thermodynamics is incorrect?    

Solved • Feb 2, 2016