WEBAug 14, 2020 · Recognizing that the work done in a reversible process at constant pressure is w rev = −PΔV, we can express Equation as follows: ΔU = qrev + wrev = TΔS − PΔV. Thus the change in the internal energy of the system is related to the change in entropy, the absolute temperature, and the PV work done.
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WEBAn irreversible process is defined as a process that cannot be reversed, a process, that cannot return both the system and the surroundings to their original conditions. Also, the entropy increases with the increase in the number of energy levels. Energy increases the entropy of the system. Presence of friction and heat losses.
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WEBFeb 20, 2022 · Irreversible processes involve dissipative factors, such as friction and turbulence. This increases heat transfer (Q_c) to the environment and reduces the efficiency of the engine. ... a tribute to superior engineering. Electrical power stations fired by coal, oil, and natural gas have greater actual efficiencies (about 42%), because their ...
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WEBFeb 15, 2014 · 1 Answer. Spontaneous processes are irreversible because they can be reversed only by taking a different path to get back to their original state. A reversible process can take the same path to return to its original state. An irreversible process must take a different path to get back to its original state. For example, when the .
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WEBJan 25, 2023 · ii. The flower blooming is an irreversible change because flowers cannot turn back into buds. iii. When milk is not refrigerated, it spoils quickly, especially in the summer. This is known as curdling or sour milk, and it is an irreversible process. If we want to make cottage cheese or paneer, we can curdle milk by adding lemon juice. iv.
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WEBDec 3, 2022 · My teacher said that the magnitude of the work done in the reversible process will be more than that done in the irreversible process. The reason behind this, my teacher said, was that the final temperature of irreversible process will always be higher than that of reversible process. But we were not taught why this happens.
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WEBIrreversible Process: The process is said to be an irreversible process if it cannot return the system and the surroundings to their original conditions when the process is reversed. The irreversible process is not at equilibrium throughout the process. For example, when we are driving the car uphill, it consumes a lot of fuel and this fuel is ...
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WEBJan 13, 2022 · As a result, a reversible process can change direction at any time, whereas an irreversible process cannot. When a gas expands reversibly against an external pressure such as a piston, for example, the expansion can be reversed at any time by reversing the motion of the piston; once the gas is compressed, it can be allowed to .
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WEBMar 11, 2023 · Reversible process: − a reversible process is a process whose direction can be 'reversed' by including infinitesimal changes to some property of the system via its surroundings. Irreversible process:− In a science a process that is not reversible is called irreversible. this concept arises frequently in thermodynamics.
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WEBJun 14, 2021 · A process that is not reversible is said to be irreversible. We distinguish between two kinds of irreversible processes. A process that cannot occur under a given set of conditions is said to be an impossible process. A process that can occur, but does not do so reversibly, is called a possible process or a spontaneous process.
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WEBStep 1. Reversible Process : The system and surroundings can be restored to their initial states ⋅. No energy is dissipated or ... View the full answer Step 2. Unlock. Answer. Unlock. Previous question Next question.
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WEBOct 20, 2016 · The heat due to irreversibility is an irreversible process; 2. ... and highlight a new approach to explain the macroscopic irreversibility in thermodynamics, ...
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WEBExplain your choice. h) The compound " A B" is a gas and the element " C" is a solid. What effect would grinding " C" into a fine powder have on the graph shown here? 4. Burning coal (Carbon) is a highly exothermic reaction. However coal, in contact with air at room temperature has such a slow reaction that it is not noticeable.
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WEBNov 25, 2017 · Some of the relevant processes involved in understanding the second law analysis are reversible, endoreversible, and irreversible processes. Any process that occurs without leaving any change of initial state when reversed is called a reversible process and the process which cannot be reversed in such a way is called an .
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WEBMechanical Engineering questions and answers. i) Can the entropy change of a closed system be zero during an irreversible process? Explain. ii) If a closed system experiences a net work transfer while it undergoes a reversible pro cess, does a net heat transfer from the system always also occur? If not, please provide an example when a net ...
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WEBQuestion: To determine the entropy change for an irreversible process between states 1 and 2, should the integral integral_1^2 delta Q/T be performed along the actual process path or an imaginary reversible path? Explain.
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WEBYour solution's ready to go! Our expert help has broken down your problem into an easytolearn solution you can count on. Question: An ideal gas in thermal contact with the surroundings is cooled in an irreversible process at constant pressure. Are delta S, delta S surroundings, and delta S total, positive, negative, or zero?
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WEBClick here👆to get an answer to your question ️ LONG ANSWER QUESTIONS * Explain reversible and irreversible processes. Describe the working of Carnot engine. (Mar 14) Obtain an expression for the effeciency.
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WEBThings or processes which cannot be reversed are called irreversible process. Burning of coal is irreversible as it will not produce coal again. ... Name the process and explain it. ... View Solution. Q5. Assertion :In an irreversible process, finite changes are made; therefore the system is not at equilibrium throughout the process. Reason: An ...
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WEBAug 10, 2020 · The coal rank influences how the nitrogen functionality can be modified after the combustion process. The pyrrolicN in anthracite coal might be considered to be the major functional form that directly affects the conversion of nitrogen to NO while both pyrrolicN and pyridinicN in semianthracite were mostly converted into quaternaryN of ...
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WEBAug 3, 2019 · 2. A generic process is defined reversible if with its reverse is possible to come back to the orginal thermodynamic states both for the system and for its enviroment. You consider a room divided into two parts, with the gas in the initial state confined in one of the two part. At a certain instant the gas flows through a hole into the second ...
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