Arrange the following gases in order of increasing rate of effusion. C₂H₆Ar HCl PH₃ A)Ar

Question

Arrange the following gases in order of increasing rate of effusion. C₂H₆Ar HCl PH₃ A)Ar < HCl < PH ₃< C ₂H ₆ B)C ₂H ₆< PH ₃< HCl < Ar C)Ar < PH ₃< C ₂H ₆< HCl D)C ₂H ₆< HCl < PH ₃< Ar E)Ar < PH ₃< HCl < C ₂H ₆

Quizplus · Accepted Answer

The rate of effusion of gases is inversely proportional to the square root of their molar masses (Graham's law). Therefore, gases with lower molar masses effuse faster. The correct order from slowest to fastest effusion based on their molar masses is: Ar < HCl < PH3 < CH4.

Arrange the Following Gases in Order of Increasing Rate of Effusion