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Answer the following questions based on the P-T phase diagram of `CO_(2)`:
`CO_(2)` is heated to a temperature `70^(@) C` and compressed Isothermally. What changes in its properties do you expect to observe ?

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It will not exhibit any clear transition to the liquid phase, but will depart more and more from ideal gas behaviour as its pressure increases.
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Answer the following questions based on the P-T phase diagram of CO_(2) : CO_(2) at 1 am pressure and temperature - 60^(@) C is compressed isothermally Does it go through a liquid phase ?

Answer the following questions based on the P - T phase diagram of CO_(2) : (a) CO_(2) at 1 atm pressure and temperature -60^(@)C is compressed isothermally. Does it go through a liquid phase ? (b) What happens when CO_(2) at 4 atm pressure is cooled from room temperature at constant pressure ? (c) Describe qualitatively the changes in a given mass of solid CO_(2) at 10 atm pressure and temperature -65^(@)C as it is heated up to room temperature at constant pressure. (d) CO_(2) is heated to a temperature 70^(@)C and compressed isothermally. What changes in its properties do you expect to observe ?

Answer the following questions based on the P-T phase diagram of carbon dioxide: What are the critical temperature and pressure for CO_(2) ? What is their significance ?

Answer the following questions based on the P-T phase diagram of CO_(2) : What happens when CO_(2) at 4 atm pressure is cooled from room temperature at constant pressure ?

Answer the following questions based on the P-T phase diagram of carbon dioxide: At what temperature and pressure can the solid, liquid and vapour phases of CO_(2) co-exist in equilibrum ?

Answer the following questions based on the P-T phase diagram of CO_(2) : Describe qualitatively the changes in a given mass of solid CO_(2) at 10 atm pressure and temperature - 65 ^(@) C as it is heated up to room temperature at constant pressure.

Answer the following questions based on the P-T phase diagram of carbon dioxide: What is the effect of decrease of pressure on the fusion and boiling point of CO_(2) ?

Answer the following questions based on the P-T phase diagram of carbon dioxide : (a) At what temperature and pressure can the solid, liquid and vapour phases of CO_(2) coexist in equilibrium ? (b) What is the effect of decrease of pressure on the fusion and boiling point of CO_(2) ? (c) What are the critical temperature and pressure for CO_(2) ? What is their significance ? (d) Is CO_(2) solid, liquid or gas at (a) -70^(@)C under 1 atm, (b) -60^(@)C under 10 atm, (c) 16^(@)C under 56 atm ?

Answer the following questions based on the P-T phase diagram of carbon dioxide: Is CO_(2) solid, liquid or gas at (a) - 70^(@) C under 1 atm, (b) - 60^(@) C under 10 atm, (c) 15 ^(@) C under 56 atm?

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