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# Entropy watch

1. Why does thermodynamic stability increase as entropy increases?

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2. (Original post by anoymous1111)
Why does thermodynamic stability increase as entropy increases?

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To understand the answer to this question fully you need to understand the concept of probability and disorder.

The universe does not make "choices" as regards the processes that occur, it simply moves in the direction of the most probable event.

When the number of possible microstates (arrangements of particles and energy) increases then the universe is overwhelmingly more likely to adopt this arrangement.

A reaction that increases its number of particles or releases energy into its surroundings has the effect of increasing the number of possible microstates - we call the sum of these microstates "entropy".
3. (Original post by charco)
To understand the answer to this question fully you need to understand the concept of probability and disorder.

The universe does not make "choices" as regards the processes that occur, it simply moves in the direction of the most probable event.

When the number of possible microstates (arrangements of particles and energy) increases then the universe is overwhelmingly more likely to adopt this arrangement.

A reaction that increases its number of particles or releases energy into its surroundings has the effect of increasing the number of possible microstates - we call the sum of these microstates "entropy".
So thermodynamic stability has increased because the reaction has resulted in more disorder, therefore is less likely to react again because disorder cannot be increased again?

I understand what your saying, but why does stability increase?

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4. (Original post by anoymous1111)
So thermodynamic stability has increased because the reaction has resulted in more disorder, therefore is less likely to react again because disorder cannot be increased again?

I understand what your saying, but why does stability increase?

Posted from TSR Mobile
Define "stability".

The tendency to resist change.

If a system arrives at a (universal) entropic minimum there is no tendency to change.

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Updated: September 19, 2015
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