Question
At 0°C, the density of a certain oxide of a gas at 2 bar is same as that of dinitrogen at 5 bar. What is the molecular mass of the oxide?
Solution
We know,
At the same temperature and for same density
(Gaseous oxide) (N2)
Here P1 = 2 bar;
P2 = 5 bar;
M2 = molecular mass of N2 = 28
Substituting the values in equation(1), we have
M1 x 2 = 28 x 5
