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Grade 10Physical Chemistry

THE REACTION BETWEEN GASEOUS NH3 and HBr produces a white solid NH4Br.SUPPOSE a small quantity of gaseous NH3 and gaseous HBr are introduced simultaneously into opposite ends of an open tube which is one metre long . Calculate the distance of white solid formed from the end which was used to introduce NH3.
EXPLAIN IT PROPERLY !! I'm in 9th standard ....

Profile image of SAMBHAV MISHRA
7 Years agoGrade 10
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1 Answer

Profile image of vibhuti agrawal
ApprovedApproved Tutor Answer7 Years ago
Graham's law of Diffusion can be applied
 
Both gases meet at a point to form white solid NH4Br, so time taken by both is same.
Length of tube is 1m or 100 cm
Take distance travelled by NH3 as x so that by HBr will be 100- x
 
Rate of Diffusion of NH3/ Rate of Diffusion of HBr will be equal to square root of molar mass of HBr by molar mass of NH3 and also equal to distance travelled by NH3 by time divided by distance travelled by HBr by t
 
So final equation comes like
 
Root of molar mass of HBr/Root of molar mass of NH3= x/100-x
 

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