## Microstate

$\Delta S = \frac{q_{rev}}{T}$

Emily Ng_4C
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Joined: Fri Sep 28, 2018 12:17 am

### Microstate

What is a microstate and how does it relate to entropy?

LedaKnowles2E
Posts: 62
Joined: Fri Sep 28, 2018 12:27 am

### Re: Microstate

From what I understand from lecture, a microstate is a specific arrangement of molecules, a specific set of positions for each molecule in a sample. The more possible microstates or arrangements there are for a sample, the more entropy that sample has.

(If anyone wants to correct/add to that, pls do)

Catly Do 2E
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Joined: Fri Sep 28, 2018 12:24 am

### Re: Microstate

Microstates are specific ways in which the energy of a system can be arranged. The multiple ways the energy can be arranged depends on the atom/molecule arrangements. Entropy is the measure of uncertainty in a system, so the more microstates there are, the higher the entropy.

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### Re: Microstate

Knowing the number of microstates gives you the W value to use in the equation S=kB*ln(W).

Ray Guo 4C
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Joined: Fri Sep 28, 2018 12:15 am

### Re: Microstate

According to Boltzmann’s equation S=k*ln(W), where W is the degeneracy, what I understand to be the number of possible microstates of the same energy level, more the number of microstates with the same energy level higher the entropy value.

LedaKnowles2E
Posts: 62
Joined: Fri Sep 28, 2018 12:27 am

### Re: Microstate

A microstate is a specific arrangement of molecules. Degeneracy is the number of possible microstates/arrangements of a group of molecules, and entropy is calculated using degeneracy.

LaurenJuul_1B
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### Re: Microstate

it is a specific arrangement of the molecules. different micro states have different energy levels and having multiple micro states increases the entropy of a system

Simran Rai 4E
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Joined: Fri Sep 28, 2018 12:17 am

### Re: Microstate

When there are more microstates, there is increased entropy. This is because there is greater positional/residual vibration between molecules and that lends to greater disorder.

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