  Equation of state for partially ionized carbon at temperatures T > ~ 10^5 K
is calculated in a wide range of densities, using the method of free energy
minimization in the framework of the chemical picture of plasmas. The free
energy model includes the internal partition functions of bound species. The
latter are calculated by a self-consistent treatment of each ionization stage
in the plasma environment taking into account pressure ionization. The
long-range Coulomb interactions between ions and screening of the ions by free
electrons are included using our previously published analytical model.
