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Gujarati JEE Chemistry : રેડોક્ષ પ્રક્રિયા અને વિદ્યુતરસાયણ

Multiple Choice Questions

61. Pt | H_{2(g.1.0 બાર)} | H_{(aq. pH - 4)}અર્ધ-કોષનો 25 $degree$ સે તાપમાન ઑક્સિડેશન પોટૅન્શિયલ કેટલો હશે ?

0.236 V
-0.118 V
0.649 V
0.118 V

62.

એક વિદ્યુતરાસાયનિક કોષમાં થતી Kc = 1.3141 × 10³⁰⁷ M⁸ અને n= 6 છે. જો કૅથોડ વિદ્યુતધ્રુવનો પ્રમાણિત રિડક્શન પોટૅન્શિયલ1.36 V હોય, તો તે ઍનોડ વિદ્યુતધ્રુવનો પ્રમાણિત ઑક્સિડેશન પોટૅન્શિયલ કેટલો હશે ?

3.16 V
1.66 V
2.71 V
6.32 V

63.

298 K તાપમાને $bold Pt bold space bold vertical line bold space bold H subscript bold 2 bold left parenthesis bold g bold. bold 1 bold. bold 0 bold space bold બ ા ર bold right parenthesis end subscript bold space bold vertical line bold space bold OH to the power of bold minus subscript bold left parenthesis bold aq bold. bold pH bold space bold minus bold space bold 4 bold. bold 5 bold right parenthesis end subscript bold space bold vertical line bold vertical line bold H subscript bold 2 bold left parenthesis bold g bold. bold 1 bold. bold 0 bold space bold બ ા ર bold right parenthesis end subscript bold space bold vertical line bold space bold Pt$ બાર કોષનો પોટૅન્શિયલ કેટલા થાય ?

0.205 V
0.08 V
0118 V
0.124 V

64.

25 $degree$ સે તાપમાને એક વિદ્યુતરાસાયનિક કોષનો પ્રમાણિત પોટૅન્શિયલ 3.16 V અને સંતુલન અચળાંક મૂલ્ય 1.727 ×10²¹⁴ M^-2 હોય, તો તે કોષમાં થતી પ્રક્રિયા માટે n જણાવો.

65.

25 $degree$ સે તાપમાને અને 1.0 બાર દબાણે હાઇડ્રોજન અર્ધ-કોષનો ઑક્સિડેશન પોટૅન્શિયલ 0.118 V છે, તો તેના દ્વાવણની pOH કેટલી હશે ?

66.

bold Pt bold space bold vertical line bold space bold H subscript bold 2 bold left parenthesis bold g bold. bold 1 bold. bold 0 bold space bold બ ા ર bold right parenthesis end subscript bold space bold vertical line bold space bold HCl subscript bold left parenthesis bold XM bold right parenthesis end subscript bold space bold vertical line bold vertical line bold space bold Au to the power of bold 3 subscript bold left parenthesis bold 0 bold. bold 001 bold space bold M bold right parenthesis end subscript bold space bold vertical line bold space bold Au

કોષનો પોટૅન્શિયલ 1.6655 V છે, તો HCl ના દ્વાવણની pH કેટલી હશે ? $bold left parenthesis bold E to the power of bold 0 subscript bold Au to the power of bold 3 bold plus end exponent bold vertical line bold Au end subscript bold space bold equals bold space bold 1 bold. bold 40 bold space bold V bold right parenthesis$

5.5
4.83
4.17
3.5

67. 25 $degree$ સે તાપમાને $bold Pt bold space bold vertical line bold space bold H subscript bold 2 bold left parenthesis bold g bold. bold 1 bold. bold 0 bold space bold બ ા ર bold right parenthesis end subscript bold thin space bold vertical line bold vertical line bold HCl subscript bold left parenthesis bold XM bold right parenthesis end subscript bold space bold vertical line bold vertical line bold space bold Cu subscript bold left parenthesis bold 0 bold. bold 01 bold space bold M bold right parenthesis end subscript superscript bold 2 bold space bold vertical line bold space bold Cu$ કોસઃઅનો પોટૅન્શિયલ 0.635 V છે, તો HCl ના દ્વાવણની pH કેટલી હશે ? $bold left parenthesis bold E to the power of bold 0 subscript bold Cu to the power of bold plus bold 2 end exponent bold vertical line bold Cu end subscript bold space bold equals bold space bold 0 bold. bold 34 bold space bold V bold right parenthesis$

68.

25 $degree$ àª¸à«‡ àª¤àª¾àªªàª®àª¾àª¨à«‡ àª•àªˆ àªªà«àª°àª•à«àª°àª¿àª¯àª¾ àªªà«‚àª°à«‹àª—àª¾àª®à«€ àª¦àª¿àª¶àª¾àª®àª¾àª‚ àª†àªªàª®à«‡àª³à«‡ àª¥àª¶à«‡ ? $bold Pt bold space bold vertical line bold space bold I subscript bold 2 bold left parenthesis bold s bold right parenthesis end subscript bold space bold vertical line bold space bold I to the power of bold minus bold comma bold space bold Cu bold space bold vertical line bold space bold Cu to the power of bold 2 bold comma bold space bold Cr bold space bold vertical line bold space bold Cr to the power of bold 3 bold comma bold space bold Zn bold space bold vertical line bold space bold Zn to the power of bold 2 bold comma bold space bold Sn bold space bold vertical line bold space bold Sn to the power of bold 2 bold comma bold space bold Pb bold vertical line bold space bold Pb to the power of bold 2 bold comma bold space bold Ag bold space bold vertical line bold space bold Ag bold comma bold space bold Fe bold space bold vertical line bold space bold Fe to the power of bold 3 bold space$ àª¨àª¾ àªªà«àª°àª®àª¾àª£àª¿àª¤ àª‘àª•à«àª¸àª¿àª¡à«‡àª¶àª¨ àªªà«‹àªŸà«…àª¨à«àª¶àª¿àª¯àª² àª…àª¨à«àª•à«àª°àª®à«‡ $bold minus bold 0 bold. bold 54 bold space bold V bold comma bold space bold minus bold 0 bold. bold 34 bold space bold V bold comma bold space bold 0 bold. bold 74 bold space bold V bold comma bold space bold 0 bold. bold 76 bold space bold V bold comma bold space bold 0 bold. bold 14 bold space bold V bold comma bold space bold 0 bold. bold 13 bold space bold V bold comma bold space bold minus bold 0 bold. bold 80 bold space bold V bold comma bold space bold 0 bold. bold 37 bold space bold V$ àª›à«‡.

$3 Ag subscript left parenthesis straight s right parenthesis end subscript space plus space Fe cubed subscript left parenthesis aq. space 0.01 space straight M right parenthesis end subscript space rightwards harpoon over leftwards harpoon 3 Ag subscript left parenthesis aq. space 0.1 space straight M right parenthesis end subscript space plus space Fe subscript left parenthesis straight s right parenthesis end subscript$
$2 straight I to the power of minus subscript left parenthesis aq comma space 0.1 space straight M right parenthesis end subscript space plus space Cu squared subscript left parenthesis aq space 0.5 space straight M right parenthesis end subscript space rightwards harpoon over leftwards harpoon space straight I subscript 2 left parenthesis straight s right parenthesis end subscript space plus space Cu subscript left parenthesis straight s right parenthesis end subscript$
$Pb squared subscript left parenthesis aq. space 0.02 space straight M right parenthesis end subscript space plus space Sn subscript left parenthesis straight s right parenthesis end subscript space rightwards harpoon over leftwards harpoon space Pb subscript left parenthesis straight s right parenthesis end subscript space plus space Sn squared subscript left parenthesis aq space 0.1 space straight M right parenthesis end subscript$
àª†àªªà«‡àª² àªªà«ˆàª•à«€ àªàª• àªªàª£ àª¨àª¹à«€

69.

298 K àª¤àª¾àªªàª®àª¾àª¨à«‡ Pt | H_{2(g.1.0 àª¬àª¾àª°)} | OH^-_{(aq.pOH -10.5)} || H_{(aq.pH - 2.0)} | H_{2(g.1.0 àª¬àª¾àª°)} àª•à«‹àª·àª¨à«‹ àªªà«‹àªŸà«…àª¨à«àª¶àª¿àª¯àª² àª•à«‡àªŸàª²à«‹ àª¥àª¾àª¯ ?

0.05015 V
0.0452 V
0.0885 V
0.5015 V

0.0885 V

298 K àª¤àª¾àªªàª®àª¾àª¨à«‡ Pt | H_{2(g.1.0 àª¬àª¾àª°)} àªªà«‹àªŸà«…àª¨à«àª¶àª¿àª¯àª² àª•à«‡àªŸàª²à«‹ àª¥àª¾àª¯? àªàª¨à«‹àª¡ àªµàª¿àª¦à«àª¯à«àª¤àª§à«àª°à«àªµ àª¤àª°àª«àª¨àª¾ àª…àª°à«àª§àª•à«‹àª·àª¨àª¾ àª¦à«àªµàª¾àªµàª£àª¨à«€ pH = 14 - pOH = 14 - 10.5 = 3.5 E_cell = E_(OX.)(_{àªàª¨à«‹àª¡)} - E(OX)(_{àª•à«…àª¥à«‹àª¡)} = 0.059 $cross times$ (pH(_{àªàª¨à«‹àª¡)} - pG(_{àª•à«…àª¥à«‹àª¡)} = 0.059 $cross times cross times space left parenthesis 2.5 space minus space 2.0 right parenthesis space equals space 0.0885$ àªµà«‰àª²à«àªŸ

70. 25 $degree$ સે તાપમાને $bold Mg bold space bold vertical line bold space bold Mg to the power of bold 2 subscript bold left parenthesis bold 0 bold. bold 01 bold space bold M bold right parenthesis end subscript bold space bold vertical line bold vertical line bold space bold HCl subscript bold left parenthesis bold XM bold right parenthesis end subscript bold space bold vertical line bold space bold H subscript bold 2 bold left parenthesis bold g bold. bold 1 bold. bold 0 bold space bold બ ા ર bold right parenthesis end subscript bold space bold vertical line bold space bold Pt$ કોષનો પોટૅન્શિયલ 2.09 V છે, તો HCl ના દ્વાવણની pH કેટલી હશે ? $bold left parenthesis bold E to the power of bold 0 subscript bold Mg to the power of bold 2 bold plus end exponent bold vertical line bold Mg end subscript bold space bold equals bold space bold minus bold 2 bold. bold 66 bold space bold V bold right parenthesis$

4.58
5.58
3.58
6.58

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Gujarati JEE Chemistry : રેડોક્ષ પ્રક્રિયા અને વિદ્યુતરસાયણ

Multiple Choice Questions

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