Question

Which of the following gas will have highest rate of diffusion?

• A. $ N{{H}_{3}} $
• B. $ {{N}_{2}} $
• C. $ C{{O}_{2}} $
• D. $ {{O}_{2}} $

Answer 1

Answer: (A)

Rate of diffusion, $ r\propto \frac{1}{\sqrt{M}} $ $ {{M}_{N{{H}_{3}}}}=17; $ $ {{M}_{{{N}_{2}}}}=28; $ $ {{M}_{C{{O}_{2}}}}=44 $ and $ {{M}_{{{O}_{2}}}}=32 $ Lower the molecular mass, higher is the rate of diffusion. Thus, $ N{{H}_{3}} $ has the highest rate of diffusion among the given.