Graham's Law of Gas Effusion

Question 1

the gradual mixing of molecules of one gas with molecules of another by virtue of their kinetic properties

Answer 1

diffusion

Question 2

the process by which a gas under pressure escapes from one compartment of a container to another by passing through a small opening

Answer 2

effusion

Question 3

Under the same conditions of temperature and pressure, how many times faster will hydrogen effuse compared to carbon dioxide?

Answer 3

4.67 times

Question 4

The rate of effusion of Ar gas was measured to be 0.20 mol/s at a certain temperature. Calculate the rate of effusion of He at the same conditions.

Answer 4

0.63 mol/s

Question 5

How much faster does argon escape through a porous container than sulfur trioxide?

Answer 5

1.42 times

Question 6

An unknown gas diffuses 0.25 times as fast as 02. What is the molecular mass of the unknown gas?

Answer 6

512 g/mol

Question 7

Calculate the effusion rate of NH3 if the effusion rate of H₂ is 0.34 mL/min.

Answer 7

0.125 mL/min

Question 8

At STP, carbon dioxide takes 27 seconds to effuse. How long will krypton take to effuse?

Answer 8

37.26 s