All Problems

Equation of the gas state processes

Problem 2.3

A vessel of volume \(V=20\) l contains a mixture of hydrogen and helium at a temperature \(t=20{ }^{\circ} \mathrm{C}\) and pressure \(p=2.0\) atm. The mass of the mixture is equal to \(m=5.0 \mathrm{~g} .\) Find the ratio of the mass of hydrogen to that of helium in the given mixture.

Reveal Answer
m1/m2=(1a/M2)/(a/M11)=0.50, where a=mRT/pVm_{1} / m_{2}=\left(1-a / M_{2}\right) /\left(a / M_{1}-1\right)=0.50, \text { where } a=m R T / p V