Practice: If H2 has an effusion rate that is 3.72 times faster than a gas, what is the identity of the unknown gas?
Effusion is the escaping of gas molecules or atoms through a pinhole.
Concept #1: Effusion
Concept #2: Rate of Effusion
Example #1: Rank the following in order of increasing rate of effusion.
O2 PF5 CO2 Xe
Concept #3: Graham’s Law of Effusion
Example #2: Calculate the ratio of the effusion rates of helium to methane (CH4).
Practice: If H2 has an effusion rate that is 3.72 times faster than a gas, what is the identity of the unknown gas?
Practice: How many times faster will H2 gas pass through a pinhole into an area of vacuum than O2 gas?
Practice: It takes 6.3 minutes for 2.3 L argon to effuse through a semipermeable membrane. How long would it take for 2.3 L of chlorine gas to effuse under similar conditions?
