Rank the following in order of decreasing rate of effusion. F₂ SF₆ Ne Kr A) SF₆ Kr F₂ Ne B) Kr Ne SF₆ F₂ C) F₂ Kr Ne SF₆ D) Ne F₂ Kr SF₆ E) Ne F₂ SF₆ Kr

Question

Rank the following in order of decreasing rate of effusion. F₂ SF₆ Ne Kr A) SF₆> Kr > F₂ > Ne B) Kr > Ne > SF₆ > F₂ C) F₂ > Kr > Ne > SF₆ D) Ne > F₂ > Kr > SF₆ E) Ne > F₂ > SF₆ > Kr

Quizplus · Accepted Answer

The rate of effusion of gases is inversely proportional to the square root of their molar masses (Graham's law). Ne (Neon) is the lightest, followed by F₂ (presumably a lighter compound), then Kr (Krypton), and finally SF₆ (presumably the heaviest compound). This order reflects decreasing rates of effusion.

Rank the Following in Order of Decreasing Rate of Effusion