Calculate the ratio of effusion rates of cl2 to f2

Asked by maham237 @ 08/06/2021 in Chemistry viewed by 291 People

Answered by maham237 @ 08/06/2021

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Answer:
Graham's law of gaseous effusion states that the rate of effusion goes by the inverse root of the gas' molar mass.
râšM = constant
Therefore for two gases the ratio rates is given by:
r1 / r2 = âš(M2 / M1)
For Cl2 and F2:
r(Cl2) / r(F2) = âš{(37.9968)/(70.906)}
= 0.732 (to 3.s.f.)

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