(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

This question is about entropy of magnetic salts. I got up to the point of finding H_{1}, the final applied field.

3. The attempt at a solution

But instead of doing integration I used this:

dS = (∂S/∂H)*dH

= (M_{0}/4α)(ln 4)^{2}

I removed the negative sign because they wanted decrease in S.

I know integration is the sure-fire way to get S_{initial}- S_{final}but why is this method wrong? Is it because this method is only an approximation?

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# Homework Help: Partial differentiation: thermodynamic relations

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