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

AIIMSAIIMS 1994States of Matter

Solution:

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.