The unit of the van der Waals| Gaseous State

JEE MAIN 2021

27-08-21 S1

Question

The unit of the van der Waals gas equation parameter ' $a$ ' in $\left(P+\frac{a n^2}{V^2}\right)(V-n b)=n R T$ is :

Select the correct option:

$\mathrm{kg} \mathrm{m} \mathrm{s} \mathrm{m}^{-2}$

$\mathrm{dm}^3 \mathrm{~mol}^{-1}$

$\mathrm{kg} \mathrm{m} \mathrm{s}^{-1}$

$\mathrm{atm} \mathrm{dm}^6 \mathrm{~mol}^{-2}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

$\frac{\mathrm{an}^2}{\mathrm{~V}^2}=\mathrm{atm} \Rightarrow \mathrm{a}=\mathrm{atm} \times \frac{\mathrm{dm}^6}{\mathrm{~mol}^2}$

Question Tags

JEE Main

Chemistry

Easy

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