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3. The internal pressure is defined as follows Using exact differentials and a Maxwell relationship, show that, for a Van Der
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Answer #1

The complete step wise calculation is given as below:-

③ It is given that, dVT At = (d) - 0 where, at = internal pressure, U=internal energy, v=volume, T=Temperature and P= Pressurare constant. where, n=number of moles, aand b R= gas constant. Then from equation ③ we have (p+nza) - MRT V-nb on p = (MRT)and ①, weget Then from equations ® , @ (ou ) = T(m 2 ) -P ana Hence proved 19 p= thre) - and MRT V-nb ana V2

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