Vander waals' equation for one mole of CO₂ gas at low pressure will be

• A

  $\left(\mathrm{p}+\frac{\mathrm{a}}{{\mathrm{V}}^2}\right)\mathrm{V}=\mathrm{RT}$

• B

  $\mathrm{p}(\mathrm{V}-\mathrm{b})=\mathrm{RT}-\frac{\mathrm{a}}{{\mathrm{V}}^2}$

• C

  $\mathrm{p}=\frac{\mathrm{RT}}{\mathrm{V}-\mathrm{b}}$

• D

  $\mathrm{p}=\left(\frac{\mathrm{RT}}{\mathrm{V}-\mathrm{b}}-\frac{\mathrm{a}}{{\mathrm{V}}^2}\right)$