Helium and oxygen gases are contained in two identical vessels at temperatures T0 and respectively. Their respective pressures are P0 and 4P0. They are connected by a thin pipe and are allowed to diffuse without any loss of energy. The equilibrium pressure of the gaseous mixture is . Find N.
Let n1 and n2 be the number of moles of Helium and oxygen gases respectively, and v0 be volume of each vessel. Then from equation of state
and
If T is the final temperature, then the initial total internal energy (kinetic) of the two gases must be equal to that of the final mixture.
The final pressure P will be given by