Statement 1 : At low pressure van der Waals' equation is reduced to $\left[\mathrm{P}+\frac{\mathrm{a}}{{\mathrm{V}}^2}\right]\mathrm{V}=\mathrm{RT}.$

Statement 2 : The compressibility factor corresponding to low pressure is given by :

                                      $1-\frac{\mathrm{RTV}}{\mathrm{a}}.$