Question:
The unit of the van der Waals gas equation
parameter 'a' in $\left(\mathrm{P}+\frac{\mathrm{an}^{2}}{\mathrm{~V}^{2}}\right)(\mathrm{V}-\mathrm{nb})=\mathrm{nRT}$ is :
Correct Option: , 4
Solution:
$\frac{\mathrm{an}^{2}}{\mathrm{~V}^{2}}=\mathrm{atm} \Rightarrow \mathrm{a}=\mathrm{atm} \times \frac{\mathrm{dm}^{6}}{\mathrm{~mol}^{2}}$