How Does Entropy Change When Vaporizing Water at Different Pressures?

senan
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Homework Statement



Find the change in the entropy of 250 g of liquid water at its boiling point when it is
vaporised at a pressure of 8 atm. Give a brief physical explanation for how this entropy
change compares with the entropy change for vaporisation at 1 atm pressure

Homework Equations





The Attempt at a Solution



I was just thinking of dividing the latent heat of transformation by the temp in kelvin. But I don't know what the pyhsical explanation
 
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How does the entropy of liquid water compare at 1 vs. 8 atm? How about a gas? Which do you think would be the bigger difference and why?
 
Thread 'Need help understanding this figure on energy levels'

Thread 'Need help understanding this figure on energy levels'

This figure is from "Introduction to Quantum Mechanics" by Griffiths (3rd edition). It is available to download. It is from page 142. I am hoping the usual people on this site will give me a hand understanding what is going on in the figure. After the equation (4.50) it says "It is customary to introduce the principal quantum number, ##n##, which simply orders the allowed energies, starting with 1 for the ground state. (see the figure)" I still don't understand the figure :( Here is...
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Thread 'Understanding how to "tack on" the time wiggle factor'

Thread 'Understanding how to "tack on" the time wiggle factor'

The last problem I posted on QM made it into advanced homework help, that is why I am putting it here. I am sorry for any hassle imposed on the moderators by myself. Part (a) is quite easy. We get $$\sigma_1 = 2\lambda, \mathbf{v}_1 = \begin{pmatrix} 0 \\ 0 \\ 1 \end{pmatrix} \sigma_2 = \lambda, \mathbf{v}_2 = \begin{pmatrix} 1/\sqrt{2} \\ 1/\sqrt{2} \\ 0 \end{pmatrix} \sigma_3 = -\lambda, \mathbf{v}_3 = \begin{pmatrix} 1/\sqrt{2} \\ -1/\sqrt{2} \\ 0 \end{pmatrix} $$ There are two ways...
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