Question on: JAMB Chemistry - 2024
At a given temperature and pressure, a gas X diffuses twice as fast as gas Y. It follows that
A
Gas Y is two times as heavy as Gas X
B
Gas Y is four times as heavy as Gas X
C
Gas Y is monoatomic
D
Gas X is diatomic
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Correct Option: B
According to Graham's Law of Diffusion, rate ∝ 1/√M (molar mass). Given Rate(X) = 2 * Rate(Y), we have:
√(M(Y)/M(X)) = 2 → M(Y)/M(X) = 4 → M(Y) = 4 * M(X).
Therefore, Gas Y is four times as heavy as Gas X.
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