The following equations of state are occasionally used for approximate calculations on gases: (gas A) p Vm

Question:

The following equations of state are occasionally used for approximate calculations on gases: (gas A) p Vm = RT(1 + b/V m)' (gas B) p(V m - b) = RT.
Assuming that there were gases that actually obeyed these equations of state, would it be possible to liquefy either gas A or B? Would they have a critical temperature? Explain your answer.