1.

Which of the following comparisons of the average kinetic energy and the average molecular speeds of H_(2) and N_(2) gases at 300K is correct ?

Answer»

`{:("AVERAGE K.E.","Average molecular SPEED"),(H_(2) = N_(2),H_(2)=N_(2)):}`
`{:("Average K.E.","Average molecular speed"),(H_(2) lt N_(2),H_(2)gtN_(2)):}`
`{:("Average K.E.","Average molecular speed"),(H_(2) = N_(2),H_(2)ltN_(2)):}`
`{:("Average K.E.","Average molecular speed"),(H_(2) = N_(2),H_(2)gtN_(2)):}`

SOLUTION :Average K.E. `= ( 3)/(2) RT`
`:.` Average K.E. `H_(2) =N_(2)`
Average molecular speed, `mu_(av) = sqrt(( 8 RT)/( pi M ))` or `mu_(av)prop sqrt((1)/( M ))`
`:.` Average molecular speed of `H_(2) GT N_(2)`


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