Answer to Question #134726 in Physical Chemistry for Jenny

Question

Determine the mean speed and root mean square speed of O2 gas at 298K Using Kinetic theory.

Answer 1

Average velocity of gas molecules is square root (8RT/M$\pi$ )

R=universal gas constant=8.314

T=Kelvin temperature=298k

M=molarmass of oxygen molecules=32g/mol

$\pi$ =3.14

Putting all these value in above equation we get the value of average velocity of oxygen molecules is 14.04 m/sec,

Root mean square velocity is =square root (3RT/M)

Putting all the values in above equation we get the value 15.24m/sec