Question

Certain sample of a gas has a volume of $0.2$ litres measured at $0^{o}C$. At the same pressure but at ${273}^{o}C$, its volume will be:

• A. $200$ $mL$
• B. $400$ $mL$
• C. $600$ $mL$
• D. $800$ $mL$

Answer 1

The correct option is B $400$ $mL$

At a constant pressure, volume is proportional to the absolute temperature.
So, $\frac{V_1}{T_1}=\frac{V_2}{T_2}$
here, $V_1=0.2$ $L$
$T_1=273$ $K$
$V_2=?$
$T_2=546$ $K$
putting all the values, we get $V_2=0.4$ $L$ = $400$ $mL$