In this experiment we will test the rate of effusion of three gases, H2, O2 and CH4. Each gas has been transferred to a balloon. Each balloon has a septum that allows a sample of the gas to be withdrawn from the balloon using a syringe.

In the Figure below video clips show samples of each gas obtained in a syringe.

 

H2

 

O2

 

CH4

 

Measuring H2 effusion.