If it takes 15 s for a certain sample of neon to effuse through a porous barrier, how much time will it take for the same amount

Question

Alborosie

2 months ago

7

If it takes 15 s for a certain sample of neon to effuse through a porous barrier, how much time will it take for the same amount

of nitrogen gas to effuse through the barrier under the same conditions? 1. greater than 15 s 2. less than 15 s 3. 15 s

Chemistry

1 answer:

alisha [2.9K] · Answer 1 · 2026-04-11T10:42:25+03:00

Answer:

The correct response is;

2. takes less than 15 seconds

Explanation:

Graham's law of effusion conveys that

$\frac{Rate 1}{Rate2} =\sqrt{\frac{Molar Mass2}{MolarMass 1} }$

Thus, knowing that the molar mass of neon gas = 20.18 g/mol

And, the molar mass of nitrogen gas = 28.014 g/mol

We deduce

= 0.72

$\frac{Rate 1}{15} =\sqrt{\frac{20.18}{28.014} }$ So, the effusion rate of nitrogen gas will be 0.72*15 = 12.73 seconds, which is indeed less than 15 seconds.