Which of the following are true statements about CO2 ?
a) The melting point of CO2 increases as pressure decreases
b) The critical point of CO2 occurs at 31oC and 73 atm
c) At 25oC and 2 atm CO2 is in the liquid state
d) At 20oC and 1 atm, solid CO2 will melt to liquid state
e) Above 31oC a pressure greater than 73 atm would condense CO2 to the liquid state
Answer:
a) no
b) don't know
c) don't think so
d) don't know
e) probably
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b) The critical point of CO2 occurs at 31oC and 73 atm
c) At 25oC and 2 atm CO2 is in the liquid state
d) At 20oC and 1 atm, solid CO2 will melt to liquid state
e) Above 31oC a pressure greater than 73 atm would condense CO2 to the liquid state
Answer:
a) no
b) don't know
c) don't think so
d) don't know
e) probably
.