Isotherms of carbon dioxide at various temperatures are represented in the figure. Answer the following questions base

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Q 3103023848.     Isotherms of carbon dioxide at various
temperatures are represented in the figure.
Answer the following questions based on the
figure.
(l) In which state will CO_2 exist between the
points a and b at temperature T_1?
(ii) At what point will CO_2 start liquefying
when temperature is T_1 ?
(iii) At what point will  CO_2 be completely
liquefied when temperature is T_2?
(iv) Will condensation take place when the
temperature is T_3?
(v) What portion of the isotherm at T_1 represent
liquid and gaseous CO_2 at equilibrium?

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