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NEET Chemistry : સંતુલન

Multiple Choice Questions

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21.

bold H subscript bold 2 bold left parenthesis bold g bold right parenthesis end subscript bold space bold plus bold space bold S subscript bold left parenthesis bold s bold right parenthesis end subscript bold space bold rightwards harpoon over leftwards harpoon bold space bold H subscript bold 2 bold S subscript bold left parenthesis bold g bold right parenthesis end subscriptપ્રક્રિયા માટે 925 K અને 1000 K તાપમાને સંતુલન અચળાક અનુક્રમે 18.5 અને 9.25 છે, તો પ્રક્રિયાની એન્થાલ્પી કેટલી થશે ?

  • 2 કિ જૂલ મોલ-1

  • 71 કિ જૂલ મોલ-1

  • -71 કિ જૂલ મોલ-1

  • 57 કિ જૂલ મોલ-1


C.

-71 કિ જૂલ મોલ-1

log space straight K subscript 2 over straight K subscript 1 space equals space fraction numerator increment increment straight H over denominator 2.303 straight R end fraction space open square brackets fraction numerator straight T subscript 2 space minus space straight T subscript 1 over denominator straight T subscript 1 space times space straight T subscript 2 end fraction close square brackets

therefore space log space fraction numerator 9.25 over denominator 18.5 end fraction space equals space fraction numerator increment straight H over denominator 2.303 space cross times space 8.3114 end fraction space cross times space fraction numerator space 75 over denominator space 9. space 25 space cross times space 1000 end fraction

 

therefore H = -71.08 કિ. જૂલ-મૉલ-1

log space straight K subscript 2 over straight K subscript 1 space equals space fraction numerator increment increment straight H over denominator 2.303 straight R end fraction space open square brackets fraction numerator straight T subscript 2 space minus space straight T subscript 1 over denominator straight T subscript 1 space times space straight T subscript 2 end fraction close square brackets

therefore space log space fraction numerator 9.25 over denominator 18.5 end fraction space equals space fraction numerator increment straight H over denominator 2.303 space cross times space 8.3114 end fraction space cross times space fraction numerator space 75 over denominator space 9. space 25 space cross times space 1000 end fraction

 

therefore H = -71.08 કિ. જૂલ-મૉલ-1


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22. bold 3 bold X subscript bold left parenthesis bold g bold right parenthesis end subscript bold space bold plus bold space bold Y subscript bold left parenthesis bold g bold right parenthesis end subscript bold space bold rightwards harpoon over leftwards harpoon bold space bold X subscript bold 3 bold Y subscript bold left parenthesis bold g bold right parenthesis end subscript પ્રક્રિયામાં સંતુલને X3Y નો જથ્થો કોના લીધે અસર પામશે ?
  • તાપમાન, દબાણ

  • તાપમાન, દબાન અને ઉદીપક

  • માત્ર દબાણ

  • માત્ર તપામન 


23.
298 K તાપમાને NO2, NO ની પ્રમાણિત સર્જનમુક્ત ઊર્જા અનુક્રમે 52.0 અને 87.0 કિ જૂલ મોલ-1 હોય, તો નીચેની પ્રક્રિયાનો સંતુલન અચળાંક કેટલો થશે ?

bold NO subscript bold left parenthesis bold g bold right parenthesis end subscript bold space bold plus bold space bold 1 over bold 2 bold O subscript bold 2 bold left parenthesis bold g bold right parenthesis end subscript bold space bold rightwards harpoon over leftwards harpoon bold space bold NO subscript bold 2 bold left parenthesis bold g bold right parenthesis end subscript
  • 1.362 space cross times space 10 to the power of negative 6 end exponent space

  • 1.362 space cross times space 10 to the power of 6

  • 2.287 space cross times space 10 to the power of negative 6 end exponent

  • 2.287 space cross times space 10


24.

નીચેની પ્રક્રિયાઓ અને તેમના સંતુલન અચળાંકો વચ્ચેનો કયો સંબંધ સાચો છે ?

bold CO subscript bold left parenthesis bold g bold right parenthesis end subscript bold space bold plus bold space bold H subscript bold 2 bold O subscript bold left parenthesis bold g bold right parenthesis end subscript bold space bold rightwards harpoon over leftwards harpoon bold space bold CO subscript bold 2 bold left parenthesis bold g bold right parenthesis end subscript bold space bold plus bold space bold H subscript bold 2 bold left parenthesis bold g bold right parenthesis end subscript bold comma bold space bold K subscript bold 1
bold CH subscript bold 4 bold left parenthesis bold g bold right parenthesis end subscript bold space bold plus bold space bold H subscript bold 2 bold O subscript bold left parenthesis bold g bold right parenthesis end subscript bold space bold rightwards harpoon over leftwards harpoon bold space bold CO subscript bold left parenthesis bold g bold right parenthesis end subscript bold space bold plus bold space bold 3 bold H subscript bold 2 bold left parenthesis bold g bold right parenthesis end subscript bold comma bold space bold K subscript bold 2
bold CH subscript bold 4 bold left parenthesis bold g bold right parenthesis end subscript bold space bold plus bold space bold 2 bold H subscript bold 2 bold O subscript bold left parenthesis bold g bold right parenthesis end subscript bold space bold rightwards harpoon over leftwards harpoon bold space bold CO subscript bold 2 bold left parenthesis bold g bold right parenthesis end subscript bold space bold plus bold space bold 4 bold H subscript bold 2 bold left parenthesis bold g bold right parenthesis end subscript bold comma bold space bold K subscript bold 3

  • straight K subscript 3 space equals space straight K subscript 1 space times space straight K subscript 2

  • straight K subscript 3 space times space straight K subscript 2 cubed space equals space straight K subscript 1 squared

  • straight K subscript 2 space times space straight K subscript 3 space equals space straight K subscript 1

  • straight K subscript 1 space times space square root of straight K subscript 2 end root space equals space straight K subscript 3


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25. bold 2 bold NO subscript bold 2 bold left parenthesis bold g bold right parenthesis end subscript bold space bold rightwards harpoon over leftwards harpoon bold space bold 2 bold NO subscript bold left parenthesis bold g bold right parenthesis end subscript bold space bold plus bold space bold O subscript bold 2 bold left parenthesis bold g bold right parenthesis end subscriptપ્રક્રિયા માટે bold K subscript bold C bold space bold equals bold space bold 1 bold. bold 8 bold space bold cross times bold space bold 10 to the power of bold minus bold 6 end exponent છે. તાપમાન 184degree સે અને  R = 0.0831 કિ જૂલ મોલ-1 છે. જો KP અને KC ની સરખામણી કરવામાં આવે ત્યારે, 
  • Kએ Kકરતાં મોટું, નાનું અથવા સમાન જોઈ શકે છે, જેનો આધાર વાયુના કુલ દબાણ પર રહેલો છે.

  • KP = KC

  • KP > KC

  • આપેલ પૈકી એક પણ નહી 


26. bold CO subscript bold left parenthesis bold g bold right parenthesis end subscript bold space bold plus bold space bold Cl subscript bold 2 bold left parenthesis bold g bold right parenthesis end subscript bold space bold rightwards harpoon over leftwards harpoon bold space bold COCl subscript bold 2 bold left parenthesis bold g bold right parenthesis end subscript bold spaceમાટે bold K subscript bold P over bold K subscript bold C નું મૂલ્ય કોને સમાન થશે ?
  • RT

  • 1.0

  • square root of RT
  • 1 over RT

27.
700 K તાપમાને bold 2 bold SO subscript bold 3 bold left parenthesis bold r bold right parenthesis end subscript bold space bold rightwards harpoon over leftwards harpoon bold space bold 2 bold SO subscript bold 2 bold left parenthesis bold g bold right parenthesis end subscript bold space bold plus bold space bold O subscript bold 2 bold left parenthesis bold g bold right parenthesis end subscript માટે સંતુલન અચળાંક Kનું મૂલ્ય bold 1 bold. bold 8 bold space bold cross times bold space bold 10 to the power of bold minus bold 3 end exponent કિલો પાસ્કલ હોય, તો આ પ્રક્રિયા માટે આ જ તાપમાને Kનું મૂલ્ય કેટલા મોલ ડેસી3- હશે ?
  • 3.09 space cross times space 10 to the power of negative 9 end exponent
  • 3.09 space cross times space 10 subscript blank superscript negative 4 end superscript
  • 3.09 space cross times space 10 cubed

28. પ્રક્રિયા bold A bold space bold rightwards harpoon over leftwards harpoon bold space bold B જો અર્ધપૂર્ન થતી હોય, તો નીચેનામાંથી કયો વિકલ્પ સાચો છે ?
  • ΛG degree space equals space minus RTlog 2
  • ΛG degree space equals space 0
  • ΛG degree space less than space 0
  • ΛG degree space greater than space 0

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29.
ગ્લુકોઝના ફૉસ્ફોરાયલેશન માટેની ગ્યાયકોલિસિસ પ્રક્રિયા માટે bold ΛG bold degreeનું મૂલ્ય -8.1 કિ જૂલ મોલ-1 હોય, તો સંતુલન અચળાંક કેટલો થશે ?
  • 4.64

  • 3.84

  • 2.64

  • 6.24


30. અચળ કદે, નીચેની કઈ પ્રક્રિયામાં અલ્પ પ્રમાણમાં આર્ગોન ઉમેરવાથી સંતુલન અચળાંકને અસર થશે નહી ?
  • PCl subscript 2 left parenthesis straight g right parenthesis end subscript space rightwards harpoon over leftwards harpoon space PCl subscript 3 left parenthesis straight g right parenthesis end subscript space plus space Cl subscript 2 left parenthesis straight g right parenthesis end subscript
  • straight N subscript 2 left parenthesis straight g right parenthesis end subscript space plus space 3 straight H subscript 2 left parenthesis straight g right parenthesis end subscript space rightwards harpoon over leftwards harpoon space 2 NH subscript 3 left parenthesis straight g right parenthesis end subscript
  • straight H subscript 2 left parenthesis straight g right parenthesis end subscript space plus space straight I subscript 2 left parenthesis straight g right parenthesis end subscript space rightwards harpoon over leftwards harpoon space 2 HI subscript left parenthesis straight g right parenthesis end subscript
  • આપેલ બધી જ પ્રક્રિયાઓ 


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