Question

Explain the different speeds of molecules Class 11 Chem. Ch5

Answer 1

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Ques. → Explain the different types of speeds possessed by molecules.

Ans. → The various types of speeds possessed by molecules are :


( i ) Most Probable Speed :- It is the speed possessed by maximum fraction of molecules at a particular temperature . It is denoted by ump.


( ii ) Average Speed :- It is the average of the different speeds all the molecules present in a given sample of gas. It is denoted by Uav.


$= > uav = \frac{u1 + u2 + u3.........un}{total \: number \: of \: molecules\: }$

( iii ) Root mean Square Speed : it is the square root of the mean of the squares of the different speeds of molecules present in a given sample of gas . It is denoted by Urms.


$= > u \: rms = \sqrt{ \frac{u1 {}^{2} + u2 {}^{2} + ........un {}^{2} }{total \: number \: of \: molecules} }$
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