Gaseous StateMedium
Question
A bottle of dry ammonia and a bottle of dry hydrogen chloride connected through a long tube are opened simultaneously at both ends the white ammonium chloride ring first formed will be :
Options
A.at the centre of the tube
B.near the hydrogen chloride bottle
C.near the ammonia bottle
D.throughout the length of the tube
Solution
Rate of diffusion 
∴ MHCL > MNH3
∴ 4HCL diffuses at slower rate which NH3 diffuses at higher rate. So NH4Cl is formed near the HCL bottle.

∴ MHCL > MNH3
∴ 4HCL diffuses at slower rate which NH3 diffuses at higher rate. So NH4Cl is formed near the HCL bottle.
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