The compressibility factor $(Z)$ of a gas is less than unity at $STP$,then:

What is compressibility factor $(Z)$? Explain $(i)$ deviation factor $(Z = 1)$,$(ii)$ $Z > 1$,$(iii)$ $Z < 1$,$(iv)$ deviation graph,and $(v)$ the relation between molar volume and $Z$.

Explain the effect of high pressure and low temperature on the validity of Boyle's law.

The compressibility factor $(Z)$ of a gas is less than unity at $STP$. Therefore:

At very low pressure,if the molar volume of $CO_2$ is constant,its compressibility factor is ..........

The variation of the compressibility factor $(Z)$ with pressure $(P$ in $bar)$ for some gases is shown in the figure below. Identify the gases $(A)$,$(B)$,and $(C)$.