Question

$C{{O}_{2}}$ can be easily liquified and even solidified because: A. It has a weak force of attraction B. It has comparatively more force of attraction than other gases C. It has more intermolecular space D. It is present in the atmosphere.-

Answer 1

Hint: $C{{O}_{2}}$ is a gas with a linear structure due to presence of two covalent bonds between carbon and oxygen atom, due to which dipole-dipole interaction cancels out.

Complete answer:
We will eliminate the wrong options in order to find the correct answer.
-All gases have more intermolecular spaces but that doesn’t mean that all gases can easily be liquified or solidified. Hence option C is eliminated.
-There are several no. of gases that are present in the atmosphere that doesn’t mean all can be easily liquified or solidified. Hence option D is also eliminated.
-If a gas is having more force of attraction, then it will always remain in liquid state thus option B is also eliminated.
-$C{{O}_{2}}$ has low melting point and low boiling point. That means the force of attraction between molecules of $C{{O}_{2}}$ is weaker.
-$C{{O}_{2}}$ is a nonpolar molecule though it has polar bonds because of its linear structure.
-Only intermolecular force present is London dispersion forces. Others may also have Dipole-Dipole interactions or Hydrogen Bonds.
Thus, the answer to our question is option A, it has a weak force of attraction.

Note:
$C{{O}_{2}}$ at 1 atm directly changes from solid to gas if temperature is above -78.5 degree Celsius. Due to weaker force of interaction, $C{{O}_{2}}$ can easily be converted into liquid by applying $5.1$ atm pressure and $-57$ Degree Celsius temperature. And can be solidified below $-78.5$ Degree Celsius temperature and $1$ atm pressure.