The net change in the entropy of the universe during an adiabatic, irreversible process is:
a) positive
b) negative
c) zero
d) the integral of dQ/T
e) indeterminate
Answer is a- Positive
An irreversible change in an isolated system will increase the entropy.
The net change in the entropy of the universe during an adiabatic, irreversible process is: a)...
(a) A gas undergoes an irreversible adiabatic expansion. Is the entropy change of the gas + environment the same as for a reversible process that leads to the same final state for the gas+environment? Choices: smaller, larger, the same, or it depends (b) A gas undergoes a cycle described on a PV diagram. For a complete cycle, the entropy change of the gas and environment are: Choices: positive for the environment but not necessarily zero for the gas, zero, negative,...
please solve all For any irreversible process the net entropy change is Infinite Negative - Positive Zero A system ..... Is a region of constant mass and only energy is allowed to cross the boundaries Has a mass transfer across its boundaries and the mass within the system is not constant None of the choices is correct Cannot transfer either energy or mass to or from the surroundings Is a specified region, not necessarily of constant volume, where transfer of...
During the adiabatic process, the change in the temperature of the system is A. Greater than zero. B. Equal to zero. C. Less than zero. D. Any of the above. E It depends on the initial temperature.
During the adiabatic process, the change in the temperature of the system is A. Greater than zero. B. Less than zero. C. Equal o zero. D. Any of the above. E. It depends on the initial temperature.
Indicate whether each statement is true or false. (a) The entropy of the universe increases for any spontaneous process. (b) The entropy change of the system is equal and opposite that of the surroundings for any irreversible process. (c) The entropy of the system must increase in any spontaneous process. (d) The entropy change for an isothermal process depends on both the absolute temperature and the amount of heat reversibly transferred.
"The change in entropy of a system undergoing an adiabatic process is always zero." (circle one) False True
53. The third law of thermodynamics states: A) Any irreversible process results in an increase in total entropy, whereas any reversible process results in no overall change in entropy. B) The entropy of a pure crystalline substance at absolute zero is zero. C) Energy is conserved. D) If AG = 0, the reaction is at equilibrium. E) None of the answers are correct 54. Which one of the following is always positive when a spontaneous process occurs? A) AS B)...
expain the answer 4. An irreversible turbine has a negative change in entropy, which means a)The entropy generation across the turbine is negative. b) There is heat loss from the turbine to the surrounding. c) There is a negative work output from the turbine d) All of the above are true
Ulston cylinder device contains a liquid-vapor xture at 300K. During a constant pressure added to water. As a result some of the liquid vaporizes. the entropy change? ure process. 750 kJ of heat is What is b.4 kJ/K c. 2.5 kJ/k d. 0.4 kJ/K 14. In which of the following processes does entropy change? a. Reversible adiabatic b. Isentropic Process procesS c. Internally reversible d. Constant-pressure expansion process process through a real turbine 15. A piston cylinder device contains superheated...
Provide an explanation for upvote thank you 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 turbine’s exit pressure to be lower than if the turbine were reversible. d) causes the turbine’s exit pressure to be higher than if the...