Question

A hydrogen-oxygen fuel cell uses 2000dm3 of hydrogen measured at room temperature and pressure.Calculate the volume of oxygen, measured at room temperature and pressure.

Answer 1

At room temperature and pressure means that;

$Temperature\ =25^0\ C\ or\ (273+25)=298K$

$Pressure\ =1\ atmospere\ of\ pressure$

Thus, the formula below is used to calculate the volume of oxygen

$\dfrac{P1V1}{T1}=\dfrac {P2V2}{T2}$

$\dfrac{1\ *\ 2000}{298}=\ \dfrac{1\ *V2}{298}$

$V2=2000$

The volume of oxygen is $2000dm^3$ measured at room temperature and pressure.