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CBSE Class 11-science Answered

4th?
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Asked by smanishkumar2002 | 02 Aug, 2018, 09:22: PM
answered-by-expert Expert Answer
(a)
straight R space equals space 8.314 space cross times 10 to the power of 7 ergs divided by straight K divided by mole
straight T space equals space 273 space plus space 25 space equals space 298 space straight K
straight M space of space electron space equals space 1 over 1837 space straight g

As comma space straight u space equals square root of fraction numerator 3 RT over denominator straight M end fraction space end root space equals space space square root of fraction numerator 3 cross times 8.314 cross times 10 to the power of 7 cross times 298 over denominator begin display style bevelled 1 over 1837 end style end fraction end root space equals space 1.16 space cross times 10 to the power of 7 space cm divided by sec

rms space velocity space of space UF subscript 6 space equals space space space square root of fraction numerator 3 cross times 8.314 cross times 10 to the power of 7 cross times 298 over denominator begin display style 352 end style end fraction end root space equals space 14.53 space cross times 10 cubed space cm divided by sec
 
(b) 
For space straight H subscript 2 comma space Average space velocity space equals space square root of fraction numerator 8 RT over denominator straight pi space straight M end fraction end root space equals space square root of fraction numerator 8 space straight R space cross times 300 over denominator straight pi cross times 2 end fraction end root space

For space CH subscript 4 comma space Average space velocity space equals space space square root of fraction numerator 8 RT over denominator straight pi space straight M end fraction end root space equals space square root of fraction numerator 8 space straight R space cross times 900 over denominator straight pi cross times 16 end fraction end root

therefore space fraction numerator Average space velocity space straight H subscript 2 over denominator Average space velocity space CH subscript 4 end fraction space equals space square root of fraction numerator 300 cross times 16 over denominator 900 cross times 2 end fraction end root space equals space fraction numerator 69.28 over denominator 42.42 end fraction space equals space fraction numerator 1.633 over denominator 1 end fraction
Answered by Ramandeep | 06 Aug, 2018, 03:33: PM
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