Which of the following equations correctly relate the change in entropy, reversible heat, and Kelvin temperature...
Which of the following equations correctly relate the change in entropy, reversible heat, and Kelvin temperature of a process? Select all that apply: qrev=ΔS×T T=qrev×ΔS ΔS=qrev×T ΔS=qrevT
2. Discuss the Carnot Cycle & Efficiency, Kelvin Temperature Scale, Definition of Eutropy Change, Tds Equations, Euthalpy-Entropy Diagrams (Mollier), Steady State Mass, Energy & Entropy Rate Balances for Coutrol Volumes, Rankine Cycle, Vapor Power, Refrigeration Cycle, and Vapor-Compression Heat Pump
O ENTROPY AND FREE ENERGY Calculating entropy change from reversible heat flow The heat of vaporization AH, of acetone (OC(CH3),) is 32.0 kJ/mol. Calculate the change in entropy AS when 56. g of acetone condenses at 56.5 °C. Be sure your answer contains a unit symbol. Round your answer to 2 significant digits. . μ ロロ x
Consider a reversible heat engine that employs a hot reservoir at a temperature of 660 K and a cold reservoir at 230 K. (a) What is the entropy change of the hot reservoir during a period in which 4300 J is extracted from the hot reservoir? (b) What is the change in the entropy of the cold reservoir? (c) Find the change in the entropy of the engine itself during this time.
True or False (Problems 1 through 10) 1. The change in entropy of a closed system is the same for every process between two specified states 2. The entropy of a fixed amount of an incompressible substance increases in every process for which temperature increases 3. A process that violates the second law of thermodynamics violates the first law of thermodynamics. 4. When a net amount of work is done on a closed system undergoing an internally reversible process, a...
Which of the following statements are true? Check all that apply. A. The entropy of a system can not increase in a reversible adiabatic process. B. The entropy of the surroundings can not increase in a reversible adiabatic process. C. The entropy of the surroundings can not increase in an adiabatic process. D. The entropy of a system can not increase in an adiabatic process.
Provide an explanation as well for the following questions. 1 Both energy and entropy can be transferred between a system and surroundings by heat, work, and mass flow True or False 2. An actual turbine undergoes an adiabatic process generating entropy due to irreversibilities. The generated entropy a) causes the turbine’s exit temperature to be lower than if the turbine were reversible. b) causes the turbine’s exit temperature to be higher than if the turbine were reversible. c) causes the...
Two heat engines each go through a process at the same temperature. The change in entropy of the first engine’s process is 88 times the change in entropy of the second engine’s process. How does the heat absorbed by the first engine compare to the heat absorbed by the second engine? A.) The heat absorbed by the first engine is 1818 the heat absorbed by the second engine. B.) The heat absorbed by the first engine is 1414 the heat...
The third law of thermodynamics relates the entropy (randomness) of matter to its absolute temperature. Which of the following statements are in agreement with the third law of thermodynamics? Check all that apply. Check all that apply. At absolute zero, the interatomic distance within a crystal is minimized. As the temperature of a perfect crystal increases, the random vibrations of the molecules decrease. At zero degrees kelvin, substances maximize entropy. In a gaseous state, the entropy of the system is...
Which of the following would have a positive change in standard
entropy at constant temperature? Choose all that apply.
CaCO3
(s) CaO (s) +
O2(g)Hg(l) Hg(s)Ag(CN)2-
(aq) Ag+ (aq) + 2
CN- (aq)C2H2
(g) + F2 (g) C2H2F2
(g)CO2(g)
CO2(s)