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Under equal conditions, how do H2 and O2 compare in effusion?
ABoth effuse equally fast
BOxygen is four times faster
CHydrogen is four times faster
DHydrogen is twice as fast
Answer & Solution
Correct answer: C. Hydrogen is four times faster
Molar mass of O2 is 16 times that of H2, so the rate ratio is the square root of 16, which is 4.
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