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. throughtout the length of the tube .

Answer

B

Explanation

`r prop (1)/(sqrtM)`
Molecular mass of HCl (36.5) is greater than that of `NH_(3) (17)` , Hence HCl will diffuse slowly , i.e. the ring will be formed near the HCl bottle