Question

A sample of gas has a volume of $0.2$ measured at 1 atm pressure and $0^{o}C$. At the same pressure, but at ${273}^{o}C$, its volume will become :

• A. $0.1$
• B. $0.4$
• C. $0.8$
• D. $0.6$

Answer 1

Answer: (B)

$0.4$

Case-I:
Initial volume $=V_1=0.2litres$
Initial temperature
$=t_1=0^{o}C=T_1=273K$

Case-II:
Final volume $=V_2=?$
Final temperature
$=t_1={273}^{o}C\Rightarrow T_2=546K$

$\Rightarrow$ Charles law is applicable
$\Rightarrow \frac{V_2}{0.2}=\frac{546}{273}\Rightarrow V_2=0.4lit.$