Melting
point
Boiling
point
Liquid
Pressure (atm)
Solid
Gas
Temperature (°C)
Using the phase diagram for CO2, what phase is carbon dioxide in at-70°C
and 1 atm pressure?
A. It is in the liquid phase.
O
O
O
B. It is in the solid phase.
C. It is at its melting point.
O
D. It is in the gas phase.
SUBMIT

the answer is the first option

explanation:

just googled it m8. not that hard

lol

answer : (a) volume of the gas = 8.67 ×   l

                (b) second virial coefficient b = -1.21226 l/mole

solution :   given,     t = 300k

                                p = 20atm

                                z = 0.86

                                n = 8.2 mmoles = 8.2 × moles

                                r =   0.082 l atm/k/mol

        find,     (a) volume of gas   and (b) second virial coefficient b at 300k.

formula used :            

                          and            

(a)            

                    = \times 0.082\times 300}{20}[/tex]

                    = 8.67 ×   l

(b)      

                    = (0.00867-1) × 8.659

                    = - 8.5839 l/mole