If two molecules of A and B having mass 100 kg and 64 kg and rate of diffusion of A is 12 x 10-3, then what will be the rate of diffusion of B
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a
15 x 10-3
b
64 x 10-3
c
5 x 10-3
d
46 x 10-3
answer is A.
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Detailed Solution
mA=1002kg/ molecule ,mB=642kg/ molecule Rate of diffusions, rA=12 x 10-3 and rB=?According to Graham's law of diffusion, rArB=dBdA=MBMAHere, M = molar mass and d = density, m = mass of one molecule. rArB=mB×NAmA×NA, where NA=Avogadro's number rArB=(64/2)(100/2)=64100=810=0.8or, 12×10−3rB=0.8⇒rB=15×10−3