Question

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

• A. $CO_2$
• B. $N_2$
• C. $NH_3$
• D. $O_2$

Answer 1

Answer: (C)

$NH_3$

Answer 2

Rate of diffusion $\propto (1 / M)$ $M =$ molecular mass $M \left( CO _{2}\right)=44 \,\,\,\,\,\,\,\,\, M \left( N _{2}\right)=28$ $M \left( NH _{3}\right)=17 \,\,\,\,\,\,\,\,\,\, M \left( O _{2}\right)=32$ Therefore, rate of $NH _{3}$ diffusion is greater than other.