Question

$250$ml of nitrogen gas maintained at $650$mm pressure and $380$ mL of oxygen gas maintained at $650$ mm pressure are out together in 1 L flask.If temperature is kept constant, what will be the final pressure of the mixture?

Answer 1

$\frac{PV}{T}$= constant or $PV$= constant as $T$ is constant.

$\Rightarrow 250\times {10}^{-3}\times 650+380\times {10}^{-3}\times 650=P\times 1$

$\therefore P=409.5mm$ of $Hg$