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Calculate the rms velocity of oxygen mol...

Calculate the rms velocity of oxygen molecules at S.T.P. The molecular weight of oxygen is 32.

Text Solution

Verified by Experts

The correct Answer is:
461.23
Here P= 1 atm = `1.013 xx 10^5 Nm^(-2)`
`M=32 g = 32 xx 10^(-3)kg`,
V=Molar volume at S.T.P
=22.4 litre = `22.4 xx 10^(-3)m^3`
Root mean square velocity of oxygen molecules at S.T.P.
`v_(rms)=sqrt((3PV)/(M))=sqrt((3xx1.013xx10^5xx22.4xx10^(-3))/(32 xx 10^(-3)))`
`=461.23 ms^(-1)`
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