IIT JEE past question Gasseous state 4

One mole of nitrogen gas at 0.8 atm takes 38 seconds to diffuse through a pinhole, whereas one mole of an unknown compound of xenon with flourine at 1.6 atm takes 57 sec to diffuse through the same hole.

Calculate the molecular formula of the compound.

2 Answers

21
tapanmast Vora ·

R = K * P/√M ............ K = Konstant

1/38 = K 0.8 / √28

1/57 = K 1.6 / √M

Take nration get M

M = 252

Xenon ka wt kitna hai ??

106
Asish Mahapatra ·

adding to tapan's answer...

M = 252 = XeFx
==> 252 = 131 +19x
==> 121 = 19x
==> x ≈ 6
So is it XeF6 ??

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