Question

A quantity of heat is confined in a chamber of constant volume. When the chamber is immersed in a bath of melting ice, the pressure of the gas is 1000 $torr$. Final temperature when the pressure manometer indicates an absolute pressure of 400 $torr$ is :

• A. 109 $K$
• B. 273 $K$
• C. 373 $K$
• D. 0 $K$

Answer 1

The correct option is A 109 $K$

As we know,

$\text{Melting point of ice}=273K$

$\frac{P_1{V}_1}{T_1}=\frac{P_2{V}_2}{T_2}$

$\frac{1000}{273}=\frac{400}{T_2}$(at constant $V$)

$T_2=109.2$

Hence, the correct option is $\text{A}$