Ethylene gas at $80\backslash$deg C is compressed isothermally from an initial pressure of $4$ bar to a final

pressure of $12$ bar. Estimate $\backslash$Delta S using SRB $($TR$,$PR$,$OMEGA$)$ function.

$($a$)9\mathrm{.}66$ J$/$mol$$K $($b$)9\mathrm{.}66$ J$/$mol$$K $($c$)12\mathrm{.}23$ J$/$mol$$K $($d$)12\mathrm{.}23$ J$/$mol$$K