## Reversible vs Irreversible

$w=-P\Delta V$
and
$w=-\int_{V_{1}}^{V_{2}}PdV=-nRTln\frac{V_{2}}{V_{1}}$

605110118
Posts: 75
Joined: Wed Sep 18, 2019 12:21 am

### Reversible vs Irreversible

What do these titles determine about one's system, and in turn what equation do you use?

AronCainBayot2K
Posts: 101
Joined: Fri Aug 30, 2019 12:17 am

### Re: Reversible vs Irreversible

Reversible is when the reaction is at equilibrium where as irreversible is not, an example of this would be combustion. Equations that relate to this would be work in which reversible process would be:-nRTlnV2/V1 and irreversible: -Pex*DeltaV

Luc Zelissen 1K
Posts: 57
Joined: Mon Jun 17, 2019 7:23 am

### Re: Reversible vs Irreversible

If a system is reversible that means that any $\Delta State functions$ are equal to zero

nehashetty_2G
Posts: 102
Joined: Thu Jul 25, 2019 12:15 am

### Re: Reversible vs Irreversible

In terms of entropy, when a system is reversible it means that the delta S total is = 0.

Anthony Hatashita 4H
Posts: 103
Joined: Wed Sep 18, 2019 12:21 am

### Re: Reversible vs Irreversible

For reversible, delta S of the system is equal to -delta S of the surroundings.

Ashley Nguyen 2L
Posts: 103
Joined: Sat Aug 17, 2019 12:18 am
Been upvoted: 1 time

### Re: Reversible vs Irreversible

For irreversible reactions, pressure is held constant as temperature changes, while reversible reactions show the change in both temperature and pressure. For irreversible reactions, work = - PdeltaV. For reversible, work = - nRTln (V2/V1), which represents an integral. In addition, entropyTotal = 0 in a reversible reaction, with entropySystem = - entropySurroundings. In an irreversible reaction, entropyTotal = entropySystem and entropySurroundings = 0.

Amy Kumar 1I
Posts: 114
Joined: Thu Jul 11, 2019 12:15 am

### Re: Reversible vs Irreversible

Reversible: w=-nRT(ln(v2/v1))
Irreversible: w=-p(delta v)

Vinita Saxena 2I
Posts: 58
Joined: Fri Aug 09, 2019 12:16 am

### Re: Reversible vs Irreversible

Irreversible is when the system changes all at once and reversible is when the system changes a tiny bit at a time so the surroundings and the system are always equal to each other at every partial change.

Daria MacAuslan 1H
Posts: 50
Joined: Sat Aug 17, 2019 12:16 am

### Re: Reversible vs Irreversible

Irreversible usually means there is a sudden change that happens very quickly, and the surroundings/ system entropies are not equal. Reversible means that there are a series of little partial changes during which the entropy change of the system is equal to the negative entropy change of the surroundings.

Caroline Zepecki
Posts: 101
Joined: Fri Aug 09, 2019 12:16 am

### Re: Reversible vs Irreversible

For a reversible equation, total entropy would be equal to zero. For something like combustion, that is irreversible, you would have a significant change in entropy

saigorijavolu2k
Posts: 108
Joined: Sat Sep 28, 2019 12:15 am

### Re: Reversible vs Irreversible

For a reversible equation Delta S is equal to -Delta S surr, which means that Delta S total is 0.
For irreversible Delta S is equal to Delta Stotal

Gerald Bernal1I
Posts: 102
Joined: Thu Jul 11, 2019 12:16 am

### Re: Reversible vs Irreversible

Reversible means the system is in equilibrium with the surroundings. Whatever happens to the surroundings will therefore affect the system. When it is irreversible it is not in equilibrium.

lauraxie2e
Posts: 108
Joined: Fri Aug 09, 2019 12:17 am

### Re: Reversible vs Irreversible

Reversible is when a process can go either way and irreversible can only go one way. The entropy of the system of a reversible reaction is 0 and the the entropy of surroundings of a irreversible reaction is 0.

Jesse Anderson-Ramirez 3I
Posts: 54
Joined: Thu Sep 26, 2019 12:18 am

### Re: Reversible vs Irreversible

For a system to be considered reversible, delta S must equal 0.
The text passage is a series of forum posts discussing the differences between reversible and irreversible processes in thermodynamics, including the equations and conditions that apply to each. No specific mathematical question is posed or answered within the posts.
no_question
Given a text passage, determine:
    1. If it contains a mathematical question (including word problems or calculations)
    2. If an answer to that mathematical question is provided in the text

First, describe the content structure you found in 1-2 sentences.

Then provide your analysis in the following format:
TYPE: <one of the following values>
- NO_QUESTION
- SINGLE_QUESTION
- SINGLE_QUESTION_WITH_ANSWER
- MULTIPLE_QUESTIONS
- MULTIPLE_QUESTIONS_WITH_ANSWERS
system
## Reversible vs Irreversible

$w=-P\Delta V$
and
$w=-\int_{V_{1}}^{V_{2}}PdV=-nRTln\frac{V_{2}}{V_{1}}$

605110118
Posts: 75
Joined: Wed Sep 18, 2019 12:21 am

### Reversible vs Irreversible

What do these titles determine about one's system, and in turn what equation do you use?

AronCainBayot2K
Posts: 101
Joined: Fri Aug 30, 2019 12:17 am

### Re: Reversible vs Irreversible

Reversible is when the reaction is at equilibrium where as irreversible is not, an example of this would be combustion. Equations that relate to this would be work in which reversible process would be:-nRTlnV2/V1 and irreversible: -Pex*DeltaV

Luc Zelissen 1K
Posts: 57
Joined: Mon Jun 17, 2019 7:23 am

### Re: Reversible vs Irreversible

If a system is reversible that means that any $\Delta State functions$ are equal to zero

nehashetty_2G
Posts: 102
Joined: Thu Jul 25, 2019 12:15 am

### Re: Reversible vs Irreversible

In terms of entropy, when a system is reversible it means that the delta S total is = 0.

Anthony Hatashita 4H
Posts: 103
Joined: Wed Sep 18, 2019 12:21 am

### Re: Reversible vs Irreversible

For reversible, delta S of the system is equal to -delta S of the surroundings.

Ashley Nguyen 2L
Posts: 103
Joined: Sat Aug 17, 2019 12:18 am
Been upvoted: 1 time

### Re: Reversible vs Irreversible

For irreversible reactions, pressure is held constant as temperature changes, while reversible reactions show the change in both temperature and pressure. For irreversible reactions, work = - PdeltaV. For reversible, work = - nRTln (V2/V1), which represents an integral. In addition, entropyTotal = 0 in a reversible reaction, with entropySystem = - entropySurroundings. In an irreversible reaction, entropyTotal = entropySystem and entropySurroundings = 0.

Amy Kumar 1I
Posts: 114
Joined: Thu Jul 11, 2019 12:15 am

### Re: Reversible vs Irreversible

Reversible: w=-nRT(ln(v2/v1))
Irreversible: w=-p(delta v)

Vinita Saxena 2I
Posts: 58
Joined: Fri Aug 09, 2019 12:16 am

### Re: Reversible vs Irreversible

Irreversible is when the system changes all at once and reversible is when the system changes a tiny bit at a time so the surroundings and the system are always equal to each other at every partial change.

Daria MacAuslan 1H
Posts: 50
Joined: Sat Aug 17, 2019 12:16 am

### Re: Reversible vs Irreversible

Irreversible usually means there is a sudden change that happens very quickly, and the surroundings/ system entropies are not equal. Reversible means that there are a series of little partial changes during which the entropy change of the system is equal to the negative entropy change of the surroundings.

Caroline Zepecki
Posts: 101
Joined: Fri Aug 09, 2019 12:16 am

### Re: Reversible vs Irreversible

For a reversible equation, total entropy would be equal to zero. For something like combustion, that is irreversible, you would have a significant change in entropy

saigorijavolu2k
Posts: 108
Joined: Sat Sep 28, 2019 12:15 am

### Re: Reversible vs Irreversible

For a reversible equation Delta S is equal to -Delta S surr, which means that Delta S total is 0.
For irreversible Delta S is equal to Delta Stotal

Gerald Bernal1I
Posts: 102
Joined: Thu Jul 11, 2019 12:16 am

### Re: Reversible vs Irreversible

Reversible means the system is in equilibrium with the surroundings. Whatever happens to the surroundings will therefore affect the system. When it is irreversible it is not in equilibrium.

lauraxie2e
Posts: 108
Joined: Fri Aug 09, 2019 12:17 am

### Re: Reversible vs Irreversible

Reversible is when a process can go either way and irreversible can only go one way. The entropy of the system of a reversible reaction is 0 and the the entropy of surroundings of a irreversible reaction is 0.

Jesse Anderson-Ramirez 3I
Posts: 54
Joined: Thu Sep 26, 2019 12:18 am

### Re: Reversible vs Irreversible

For a system to be considered reversible, delta S must equal 0.
user
The text passage is a series of forum posts discussing the differences between reversible and irreversible processes in thermodynamics, including the equations and conditions that apply to each. No specific mathematical question is posed or answered within the posts.

TYPE: NO_QUESTION