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Q.
Molar volume of $CO_{2}$ is maximum at
J & K CETJ & K CET 2004States of Matter
Solution:
$PV = nRT$ Here $n =1\, V =\frac{R T}{P}$
At $NTP\,V =\frac{R \times 273}{1}=273\, R$
At $0^{\circ} C (273\, K )$ and $2\, atm V$
$=\frac{R \times 273}{2}=\frac{273 R}{2}$
At $127^{\circ} C (400\, K )$ and $atm\, V =\frac{R \times 400}{1}=400\, R$
At $273^{\circ} C (546\, K )$ and $2\, atm\, V =\frac{R \times 546}{2}=273 R$
Thus, molar volume is maximum at $127^{\circ} C$ and $1\, atm$ pressure