Which of the following is the second law of thermodynamics?
a. ΔSsystem = 0 at 0 K
b. ΔEuniverse = ΔEsystem + ΔEsurroundings = 0
c. ΔSuniverse = ΔSsystem + ΔSsurroundings < 0
d. ΔSuniverse = ΔSsystem + ΔSsurroundings = 0
e. ΔSuniverse = ΔSsystem + ΔSsurroundings > 0
Which of the following is the second law of thermodynamics? a. ΔSsystem = 0 at 0...
0/1.5 pts Question 12 Which of the following statement is true? The Second aw of thermodynamics predicts a spontaneous reaction if the entropy of the system increases The First law of thermodynamics allows pred ctlon of spontaneous changes The Third law of thermodynamics states the entropy of any crystal at 0 K is zero to stated fne entropy funiverse wil only Te Second iicthe modvna increate over me
Second Law of Thermodynamics Learning Goal: To understand the implications of the second law of thermodynamics. The second law of thermodynamics explains the direction in which the thermodynamic processes tend to go. That is, it limits the types of final states of the system that naturally evolve from a given initial state. The second law has many practical applications. For example it explains the limits of efficiency for heat engines and refrigerators. To develop a better understanding of this law,...
5. The total entropy of a system and its surroundings always increases for a spontaneous process is a statement bt a) the third law of thermodynamics. b) the second law of thermodynamics c) the law of constant composition d) the law of conservation of matter e) the first law of thermodynamics 6. Which of the following is a redox reaction? 7. A certain electrochemical cell has for its cell reaction Zn Hgo occurring at the anode? Zno Hg Which is...
8. The second law of thermodynamics states that A) Delta E=g+w
B) Delta H^ 0 rrn =Sigma nDelta H^ f(products)-Sigma mDelta H^
f(reac reactants) C) for any spontaneous process, the entropy of
the universe increases D) the entropy of a pure crystalline
substance is zero at absolute zero E) Delta S=q rcv /T at constant
temperature
D) zero E) the same as the energy, E 8. The second law of thermodynamics states that A) AE - 9+ w B) AHørxn...
A process that violates the first law of thermodynamics? A process that violates the second law of thermodynamics?
According to the Second Law of Thermodynamics A. the total entropy changes in any reaction that occurs spontaneously must be greater than 0. B. the total entropy changes in any reaction that occurs spontaneously must be less than 0. C. the total entropy of the universe remains constant. D. the total entropy of the universe is always decreasing.
Exercises In this section similar exercises are paired. Spontaneity, Entropy, and the Second Law of Thermodynamics: Free Energy 25. Which of the following processes are spontaneous? a. Salt dissolves in H2O. b. A clear solution becomes a uniform color after a few drops of dye are added. c. Iron rusts. d. You clean your bedroom.
a) In thermodynamics, what is the second law efficiency? How does it differ from the first law efficiency? (2 marks) b) Can a system have a higher second law efficiency than the first law efficiency during a process? Give examples (Hint: Consider efficiencies of a reversible cycle). (2 marks) c) An ideal gas is stored in a closed vessel at pressure p and temperature T. If p = po, derive an expression for the specific exergy in terms of T,...
The second law of thermodynamics leads us to conclude that
The second law of thermodynamics means that ____. a) the entropy of an isolated system can decrease Yes/No b) the entropy of a system can decrease if the entropy of its surrounding increases by a larger amount Yes/No c) heat can spontaneously flow from a colder body to a hotter body Yes/No d) a system tends to go to a final state which has a smaller number of possible mechanical states Yes/No