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Through the two ends of a glass tube of length 200 cm HCl gas and NH3 are allowed to enter. At what distance the white ring of ammonium chloride will first appear from HCl end

Through the two ends of a glass tube of length 200 cm HCl gas and NH3 are allowed to enter. At what distance the white ring of ammonium chloride will first appear from HCl end

Grade:12

1 Answers

Vikas TU
14149 Points
7 years ago
Let x be the length from the HCl end and therfore, (2-x) from the other end.
for x length rate of diffusion that is,
dx/dt = PA/(root(36.5T))
d(2-x)/dt = PA/root(17T)
dividing both we get,
x/(2-x) = > root(17/36.5) 
x = 2/2.466 = > 0.81 m or 81 cm.

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