ChemistryKinetic theory of matter and gas lawsWAEC
Which of the following gases diffuses fastest? (H = 1, He = 4, C = 12, O = 16)
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Answer: B. H₂
By Graham's law, the lightest gas diffuses fastest: H₂ (2) is lighter than He (4).
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.