Question

In a 3 m long narrow tube,HCl is allowed to
diffuse in the tube from one end and NH, from
the other end. if the diffusion is started at the
same time, the length of the tube from NH, end
at which the fumes of NH Cl is formed is
1) 1.22 m 2) 1.78 m 3) 2.0 m 4) 1.55 m​

Answer 1

In a 3 m long narrow tube, HCl is allowed to diffuse in the tube from one end and NH₃ from the other end. If diffusion is started at the same time, predict at what point the white fumes of NH₄Cl will form ?

Given :

Length of tube = 3m

To find :

The point at which the white fumes of NH₄Cl will form

Solution :

Let the distance travelled by HCl = x

So, the distance travelled by NH₃ = 3 - x

According to Graham's Law

Rate ∝ 1 / √m = K / √m = distance travelled / time

HCl :

x / t = K / √36.5

NH₃ :

(3 - x) / t = K /  √17

(3 - x) / x = √36.5 / √17

3√17 - x√17 = x√36.5

3√17 = 10.165x

x = 1.22m

Distance travelled by HCL = 1.22m

Distance travelled by NH₃ = 1.78m

Therefore , length of tube from NH₃ side = 1.78m.

Answer 2

The required answer solved in the attachment. Kindly refer it. ||THANK YOU||