Question

For three low density gases $A , B , C$ pressure versus temperature graphs are plotted while keeping them at constant volume, as shown in the figure.

The temperature corresponding to the point ' $K$ ' is :

• A. $-373^{\circ} C$
• B. $-40^{\circ} C$
• C. $-100^{\circ} C$
• D. $-273^{\circ} C$

Answer 1

Answer: (D)

For isochoric process
$\frac{ P }{ T }= n \frac{ R }{ V }=\text { constan } t$
$P =\frac{ nR }{ V }( t +273)$
If $P =0 \Rightarrow t =-273^{\circ} C$