Question

1 moles of an ideal gas are in equilibrium at fixed pressure (e.g. 10⁶ Pa) and temperature (e.g. 300 K).

3)

The two key features of an ideal gas are:

A) U depends only on N and T, not V.
B) The V dependence of S is given by a term Nk*ln(V)

For a gas that obeys (A) but has some excluded volume so S goes as Nkln(V-Nb), with b=10^-28 m³, find the equilibrium volume V. All other conditions are the same as above.

Save the algebraic expression you obtain for V here because you will need it in another exercise from this section.

You know dG/dV from Q1 (dG/dV = 0). You know the volume-dependent parts of G, so you can take that derivative and solve the equation you get to find V.

Answer 1