Q 1908178908.     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 `70^0 C` and
compressed isothermally. What changes
in its properties do you expect to observe?