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Question

20 L of SO2 diffuses through a porous partition in 60 seconds. Volume of O2diffuse under similar conconditionsin 30 seconds will be :

A
12.14 L
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B
14.14 L
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C
18.14 L
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D
28.14 L
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Solution

The correct option is B 14.14 L
The rate of diffusion is volume diffused per unit time and is inversely proportional to the square root of molar mass.

rr=VtVt=MM

Here, r, V, t, and M are the rate of diffusion, the volume diffused, the time taken for diffusion and the molar mass of SO2
and r', V', t' and M' are the rate of diffusion, the volume diffused, the time is taken for diffusion and the molar mass of O2 respectively.

Substitute values in the above equation
20×30V×60=3264
V=14.14 L.
Hence, a volume of O2 diffused under similar conditions in 30 seconds will be 14.14 L.

So, the correct option is B

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