A container of gas with a pressure of 450 kPa contains three different gasses -hydrogen, oxygen, and nitrogen. If the partial pressure of the hydrogen is 210 kPa and the partial pressure of the oxygen is 125 kPa, what is the partial pressure of nitrogen?

Jul 9, 2017

${P}_{{\text{N}}_{2}} = 115$ $\text{kPa}$
Therefore, the partial pressure of ${\text{N}}_{2}$ is simply
$\overbrace{450 \textcolor{w h i t e}{l} \text{kPa")^(P_"total}}$ - overbrace(210color(white)(l)"kPa")^(P_("H"_2)) - overbrace(125color(white)(l)"kPa")^(P_(""O"_2)) = color(red)(115 color(red)("kPa"