Question

How can you prove that the speed of diffusion of ammonia is more than the speed of diffusion of hydrochloric acid?

Answer 1

Rate of diffusion between two gas of molar mass M1 and M2 ia given by :-

$\frac{ d_{1} }{ d_{2} } = \sqrt{ \frac{ m_{2}}{ m_{1}} }$

Now, Mass of Ammonia = 17 gram.

Mass of HCl = 36.5 gram.

Now, mass of HCl > Mass of Ammonia

=>

$m_{2} > m_{1}$

Thus, in the formula

$\frac{ d_{1} }{ d_{2} } = \sqrt{ \frac{ m_{2}}{ m_{1}} } \\ \\ = > \frac{ d_{1} }{ d_{2} } > 1$

Hence, rate of diffusion of ammonia is greater than hydrochloric acid.