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 < PH₃< C₂H₆ B) C₂H₆< PH₃< HCl < Ar C) Ar < PH₃< C₂H₆< HCl D) C₂H₆< HCl < PH₃< Ar E) Ar < PH₃< HCl< C₂H₆

Quizplus · Accepted Answer

Rate of effusion is inversely proportional to the square root of molar mass. The molar masses of the gases are:C₂H₆: 30 g/molAr: 40 g/molHCl: 36.5 g/molPH₃: 34 g/molTherefore, the order of increasing rate of effusion is:Ar < HCl < PH₃ < C₂H₆

Arrange the Following Gases in Order of Increasing Rate of Effusion