Question

A certain mass of gas occupies $\alpha$ value of 2 l at STP. To what temperature the gas must be heated to double its volume, keeping the pressure constant?

Answer 1

$V_1=2T_1=273$

$V_2=4T_2=?$

$\frac{V_1}{T_1}=\frac{V_2}{T_2}$

$\frac{2}{273}=\frac{4}{T_2}\Rightarrow T_2=\frac{4\times 273}{2}=546K$

The gas must be heated to $546K$ to double its volume.