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Question

A straight glass tube has two inlets X and Y at the two ends. The length of the tube is 200cm. HCl gas through inlet X and NH3 gas through inlet Y are allowed to enter the tube at the same tube. White fumes first appears at a point P inside the tube. Find the distance of P from X.

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Solution


White fumes occur where NH3 meets HCl
rate α1M.W (Graham's law of diffusion)
also known that more rate more distance covered. So rate α distance.
dNH3dHCl=HClNH3
200xx=36517
x=81.22cm
81.22cm from inlet X.

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