1.

Given RMS velocity of hydrogen at 300 K is 1.9 xx 10^(3) m//sec. The RMS velocity of oxygen at 1200 K will be

Answer»

`7.6 XX 10^(3) m//sec`
`3.5 xx 10^(3) m//sec`
`0.95 xx 10^(3) m//sec`
`0.475 xx 10^(3) m//sec`

Solution :`U_(H_(2))=SQRT((3Rxx300)/2)=1.9xx10^(3) ms^(-1)`
`U_(O_(2))=sqrt((3Rxx1200)/32)=2/4 sqrt((3Rxx300)/2)`
`=1/2xx1.7xx10^(3) ms^(-1)=0.95xx10^(3) ms^(-1)`


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