Question

Diffusion pressure is directly proportional to:

• A. Concentration of molecules diffusing
• B. Kinetic energy of diffusing molecule
• C. Concentration gradient
• D. All of the above

Answer 1

The correct option is A Concentration of molecules diffusing

The same conditions of temperature and pressure, the molar mass is proportional to the mass density. Therefore, the rate of diffusion of different gases is inversely proportional to the square root of their mass densities.

So, the correct option is 'Concentration of molecules diffusing'.