Rank the following in order of decreasing rate of effusion. F₂ SF₆ He Ar

Name: Rank the following in order of decreasing rate of effusion. F 2 SF 6 He Ar
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Question

Quizplus · Accepted Answer

According to Graham's law of effusion, the rate of effusion is inversely proportional to the square root of the molar mass. Therefore, lighter gases effuse faster. Helium (He) has the lowest molar mass, followed by F2, Ar, and SF6, which has the highest molar mass.

Rank the Following in Order of Decreasing Rate of Effusion