Isotherms of carbon dioxide at various temperatures are represented in the figure

CBSE Class 11 CBSE Class 11 Chemistry
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Isotherms of carbon dioxide at various temperatures are represented in the figure. Answer the following questions based on the figure.
(i) In which state will CO_{ 2 } exist between the points a and b at - temperature T_{ 1 }
(if) 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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(i) $CO_{ 2 }$ will exist as gaseous state between ‘a’ and ‘b’.
(ii) At point ‘b’, $CO_{ 2 }$ will start liquefying.
(iii) At point ‘g’, $CO_{ 2 }$ will be completely liquefied.
(iv) No, because $T_{ 3 }$ is greater than $T_{ c }$ (critical temperature).
(v) Between 'b’ and ‘c is the portion of isotherm at which liquid $CO_{ 2 }$ is in equilibrium with gaseous $CO_{ 2 }$