This page shows the derivation of the four Maxwell relations from the basic relations given for a system with one constituent with a fixed number of particles, from equation 5.1.10, the first law, and...This page shows the derivation of the four Maxwell relations from the basic relations given for a system with one constituent with a fixed number of particles, from equation 5.1.10, the first law, and the second law.
In general, we have \[\begin{aligned} \hbox{\tt THIS}&\hbox{\tt\ SPACE AVAILABLE}& dE&=T\,dS + y\,dX + \mu\,dN \vph\\ F&=E-TS & dF &= -S\,dT+ y\,dX + \mu\,dN \vph\\ \CH&=E-yX & d\CH &= T\,dS - X\,dy +...In general, we have \tt THIS\tt\ SPACE AVAILABLEdE=TdS+ydX+μdN\vphF=E−TSdF=−SdT+ydX+μdN\vph\CH=E−yXd\CH=TdS−Xdy+μdN\vphG=E−TS−yXdG=−SdT−Xdy+μdN\vphΩ=E−TS−μNdΩ=−SdT+ydX−Ndμ. Generalizing (−p,V)→(y,X), we also obtain, mutatis mutandis, the following Maxwell relations: \[\begin{aligned} \pabc{T}{X}{S,N}&=\pabc{y}{S}{…