Chemistry - Ideal Gas Question with Solution | TestHub

${\mathrm{P}}_1{\mathrm{V}}_1={\mathrm{n}}_1\mathrm{R}{\mathrm{T}}_1$
${\mathrm{P}}_1{\mathrm{V}}_1={\mathrm{n}}_2\mathrm{R}{\mathrm{T}}_2$
So${\mathrm{n}}_1\mathrm{R}{\mathrm{T}}_1=\mathrm{}{\mathrm{n}}_2\mathrm{R}{\mathrm{T}}_2$(P of V are constant)
${\mathrm{n}}_1{\mathrm{T}}_1=\mathrm{}{\mathrm{n}}_2{\mathrm{T}}_2$,
${\mathrm{n}}_{1}300\mathrm{}=\mathrm{}{\mathrm{n}}_{2}500$
${\mathrm{n}}_2=\frac{3}{5}{\mathrm{n}}_1$
No. of moles escaped$={\mathrm{n}}_1-\frac{3}{5}{\mathrm{n}}_1=\frac{2}{5}{\mathrm{n}}_1$
% escaped$=\frac{2}{5}\times 100=40\mathrm{\%}$