Isotherms of carbon dioxide at various temperature are represented in Fig.
Answer the following questions bases of this figure.
(i) In which state will `CO_(2)` exist between the pointa a and b a temperature `T_(1)`?
(ii) At what point will `CO_(2)` start liquefying when temperature is `T_(1)`?
(iii) At what point wil `CO_(2)` be completely liquafied whe temperature is `T_(2)`.
(iv) Will condensation take places when the temperature is `T_(3)`.
(v) What portion of the isotherm at `T_(1)` represents liquid and gaseous `CO_(2)` at equilibrium ?