Question

What is the critical pressure of $C{O_2}$ ?

Answer 1

We have to know that, the critical temperature (of a substance) can be characterized as the most elevated conceivable temperature esteem at which the substance can exist as a fluid. At temperatures over the basic temperature of a given vaporous substance, it can at this point don't be liquified, paying little mind to the sum pressure applied to it.

Complete answer:
We have to know that, the basic temperature above which distinctive fluid and gas stages don't exist, the basic pressing factor is the fume pressing factor of a liquid. The properties of the gas, and fluid stages become equivalent to the basic temperature reached, bringing about only one stage. The critical point is the point on a stage graph in temperature and pressing factor where a substance's fluid and vaporous stages consolidate together into a solitary stage. The combined single stage is known as a supercritical liquid over the temperature of the basic point.
The basic temperature of a substance can be characterized as the most elevated temperature at which the substance can exist as a fluid. At temperatures over the basic temperature, the substance being referred to in its fume or vaporous state can at this point don't be liquified, paying little mind to the sum pressure applied to it.

Note:
The critical temperature of a gas gives knowledge into the strength of the intermolecular powers of fascination that its particles are dependent upon. For instance, a vaporous substance with generally powerless intermolecular powers will be more enthusiastically condense than a vaporous substance highlighting more grounded intermolecular powers of fascination.