Which is true about the effusion rates of helium and sulphur dioxide when the molar mass of helium is 4 grams/mole and the molar mass of sulphur dioxide is 64 grams?

Sulphur dioxide effuses 4 times faster than helium.

Sulphur dioxide effuses 0.25 times faster than helium.

Helium effuses 0.25 times faster than sulphur dioxide.

Helium effuses 4 times faster than sulphur dioxide.

Molar mass is not related to effusion.

Question

Roderick Sims

Chemistry

29 June, 01:19

Which is true about the effusion rates of helium and sulphur dioxide when the molar mass of helium is 4 grams/mole and the molar mass of sulphur dioxide is 64 grams?

Sulphur dioxide effuses 4 times faster than helium.

Sulphur dioxide effuses 0.25 times faster than helium.

Helium effuses 0.25 times faster than sulphur dioxide.

Helium effuses 4 times faster than sulphur dioxide.

Molar mass is not related to effusion.

+3

Answers (1)

Know the Answer?

Deangelo Horne · Answer 1

mv^2 is a conserved quantity

so v goes as sqrt (1/m)

heavier is slower

64/4 = 16

sqrt (16) = 4

B) and D) are both correct strictly speaking - lean towards submitting D) as answer

so i would say D)