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?
WEBQuestion: 2. (a) Explain the difference between a reversible and irreversible process in terms of the order of the system before and after the process and give an example of a naturally occurring irreversible event to illustrate your explanation. (6 marks) (b) In a practical thermodynamic cycle, such as a heat pump, the entropy change of ...
WEBMar 10, 2019 · A reversible process is a process in which both system and surrounding can be restored to original state after the conclusion of the process, by any means. Now it is obvious that a process which is not reversible is an irreversible process. Practically all the processes are irreversible processes. Causes of irreversibility in a process. Lack .
WEB1 / 4. Find stepbystep Physics solutions and your answer to the following textbook question: Give two examples of reversible processes and two examples of irreversible processes in purely mechanical systems, such as blocks sliding on planes, springs, pulleys, and strings. Explain what makes each process reversible or irreversible..
WEBAug 13, 2021 · Recognizing that the work done in a reversible process at constant pressure is. wrev = − 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.
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 ...
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.
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.
WEBJun 8, 2021 · Answer: Examples of Reversible Changes: Melting of ice into water: By freezing the water we can obtain ice again. Folding a paper: By unfolding it, we can undo the change. Flot milk to cold milk: By boiling milk, we can make it warm again. Examples of Irreversible Changes: Bursting a balloon. Bud becoming a flower.
WEBStep 1. In thermodynamics, a process that cannot be precisely undone to return the system to its initial con... View the full answer Step 2. Unlock. Answer. Unlock.
WEBOct 19, 2023 · Matter is capable of undergoing changes, which are classified as either physical or chemical. Physical changes in matter are often reversible: An ice cube can melt into liquid water, and then the liquid water can be frozen back into an ice cube. Chemical changes, on the other hand, are not reversible: A log burned in a fire turns to ashes, but ...
WEBJun 14, 2021 · Also, once the curd is formed, it cannot be reversed back into milk. So, there is a formation of new substance with different properties and also it is an irreversible process. Hence, setting of curd is a chemical change. Question 7. Explain why burning of wood and cutting it into small pieces are considered as two different types of changes ...
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.
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.
WEBNov 19, 2020 · For an irreversible adiabatic process entropy is generated within the system resulting in an increase in the entropy of the system only. An example of an irreversible adiabatic process is the rapid expansion or compression of a gas by a piston in an insulated cylinder such that the gas is not in internal equilibrium during the process.
WEBMay 14, 2018 · 1. For an irreversible expansion process, a crude approximation to the force exerted by the gas on the piston (where the work is done) can be provided by the equation. F A = Pext = nRT V − k V dV dt F A = P e x t = n R T V − k V d V d t. where Pext P e x t is the force per unit area of the piston on the gas and the constant k is ...
WEBOct 2, 2012 · 2 Answers. There are two parts to this answer. The first is that the entropy change is defined only for reversible processes. The second is that the entropy is a state function. Many, but not all, the functions in thermodynamics (including the internal energy) are state functions. A state function is one that is independent of path.
WEBJun 1, 2022 · The novel gasifiionreduction coupling process (GRCP) was proposed to obtain higher coal gas/hot metal polygeneration system efficiency. The hematite particles replaced previous moderators (H 2 O/CO 2) in the entrainedflow gasifiers, and direct reduced iron (DRI) can be obtained this study, the thermodynamic .
WEBDefine entropy and calculate the increase of entropy in a system with reversible and irreversible processes. Explain the expected fate of the universe in entropic terms. ... Figure (a) Heat transfer from a hot object to a cold one is an irreversible process that produces an overall increase in entropy. (b) The same final state and, thus ...
WEBA cyclical process brings a system, such as the gas in a cylinder, back to its original state at the end of every cycle. Most heat engines, such as reciproing piston engines and rotating turbines, use cyclical processes. The second law, just stated in its second form, clearly states that such engines cannot have perfect conversion of heat transfer into .
WEBAn irreversible process takes place by which the entropy of the universe increases by J/K. If the temperature of the environment in which the process occurred is 220 K, how much energy (in J) was made unavailable for useful work as a result? Problem 53P: A copper rod of crosssectional area cm2 and length m conducts heat from a ...
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 .
WEBExplain the difference between a reversible and irreversible process. (With the aid of a diagram) 2. moles of an ideal gas expands isothermally and reversibly from 10 to 20 L, at 298 K. (a) What is the change in entropy for the gas, ΔSs s ?
WEBEngineering; Mechanical Engineering; Mechanical Engineering questions and answers; 2. (a) Explain the difference between a reversible and irreversible process in terms of the order of the system before and after the process and give an example of a naturally occurring irreversible event to illustrate your explanation.
WEBexplain me the difference of reversible change and irreversible change. View Solution. Q 3. Is cutting or tearing of paper reversible or irreversible. if reversible how can we reverse it? Name the process and explain it. View Solution. Q 4. 'One way changes are classified is reversible and irreversible'.
WEBReversible process: Irreversible process: i. A reversible process is a change that can be retraced in a reverse (opposite) direction. An irreversible process is a change that cannot be retraced in a reverse (opposite) direction. ii. The path of a reversible process is the same in the forward and the reverse direction.
WEBAug 29, 2023 · Chemical Reversibility. As we have defined them here, electron transfer is a heterogenous process occurring between a solid working electrode and a solution species close to or at the surface of the electrode. To determine the extent of chemical reversibility, we must ask ourselves if the electrochemically generated species is stable to ...
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