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Gaseous State: Ideal Gases
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Graham's law of diffusion and effusion
NEET level
Single correct option
Difficulty 1 of 3
ig112
A balloon filled with which gas will deflate fastest through the same tiny pores, at the same temperature and pressure?
A
He
B
N
X
2
C
Ar
D
CO
X
2
Answer: A
Effusion rate
∝
1/
M
. He (4) is the lightest of the four (N2 28, Ar 40, CO2 44), so it escapes fastest.
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