Question

What is the boiling point of `CO_2`?

Answer 1

Under standard conditions, carbon dioxide does not exhibit a boiling point because it does not express a liquid phase.

Explanation:

Carbon dioxide does not have a liquid phase under standard conditions of `1*atm`. It `"sublimes"`, i.e. it undergoes transition from the solid phase to the gaseous phase, at `-78.5` `""^@C`, at `1*atm`.