Chemistry · 2019
JEE Main · 9 April 2019, Shift 1 · Q52
Consider the van der Waals constants, a and b, for the following gases. Which gas is expected to have the highest critical temperature?
Consider the van der Waals constants, a and b, for the following gases.
Which gas is expected to have the highest critical temperature ?
| Gas | Ar | Ne | Kr | Xe |
| a/ $\displaystyle \left(\mathrm{atm} \mathrm{dm}^6 \mathrm{~mol}^{-2}\right)$ | $\displaystyle 1.3$ | $\displaystyle 0.2$ | $\displaystyle 5.1$ | $\displaystyle 4.1$ |
| b $\displaystyle /\left(10^{-2} \mathrm{dm}^3 \mathrm{~mol}^{-1}\right.$ | $\displaystyle 3.2$ | $\displaystyle 1.7$ | $\displaystyle 1.0$ | $\displaystyle 5.0$ |
Official answer
(3)
Kr
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