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Ch.18 - Thermodynamics: Entropy, Free Energy & Equilibrium

Chapter 18, Problem 28

Rank the situations represented by the following drawings according to increasing entropy.

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Hello everyone today. We have the falling problem which situation below shows the highest entropy. Well, first it's important to know what entropy is entropy. In simplest terms. It's just a measure of disorder in a system. So it's the measure of disorder in a system. And so if we look at answer choice A we look at the molecules and we can note that they are highly ordered, right? They are very neat be stacked upon one another. And if a system is highly ordered, it is said to have the lowest entropy. So answer choice is not going to be our answer. If we look at sea, we can see that this is considered very disordered, right? The molecules are kind of everywhere and it's more disordered than that of B. So we're going to focus on C. And if something is very disordered or low lee ordered, it's going to have the highest entropy right? Something is highly disordered. That means we're going to have high entropy. And so that's why my answer is going to be Andrew choice C. And with that we've answered the question overall. I hope this helped. And until next time
Related Practice
Textbook Question

Ideal gases A (red spheres) and B (blue spheres) occupy two separate bulbs. The contents of both bulbs constitute the initial state of an isolated system. Consider the process that occurs when the stopcock is opened.

(b) What are the signs ( + , - , or 0) of ∆H, ∆S, and ∆G for this process? Explain.

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Textbook Question

Ideal gases A (red spheres) and B (blue spheres) occupy two separate bulbs. The contents of both bulbs constitute the initial state of an isolated system. Consider the process that occurs when the stopcock is opened.

(c) How dpes this process illustrate the second law of thermodynamics?

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Textbook Question

Ideal gases A (red spheres) and B (blue spheres) occupy two separate bulbs. The contents of both bulbs constitute the initial state of an isolated system. Consider the process that occurs when the stopcock is opened.

(d) Relate each of the pictures to the graph in Figure 18.11.

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Textbook Question
An ideal gas is compressed at constant temperature. What are the signs ( + , - , or 0) of ∆H, ∆S, and ∆G for the process? Explain.

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Textbook Question

Consider the dissociation reaction A2(g) ⇌ 2 A(g). The following pictures represent two possible initial states and the equilibrium state of the system:

(b) What are the signs ( + , - , or 0) of ∆H, ∆S, and ∆G when the system goes from initial state 1 to the equilibrium state? Explain. Is this a spontaneous process?

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Textbook Question
Consider again the dissociation reaction

(e) What is the value of ∆G for the dissociation reaction when the system is at equilibrium?
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