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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Use the data given in below find out the most stable oxidised species. E0cr2O12-Cr3+ = 1.33 V E0Cl2Cl- = 1.36 V E0MnO4-MN2+ = 1.51 V E0Cr3+Cr = – 0.74 V

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प्रश्न

Use the data given in below find out the most stable oxidised species.

`E^0 (Cr_2O_1^(2-))/(Cr_(3+))` = 1.33 V   `E^0 (Cl_2)/(Cl^-)` = 1.36 V

`E^0 (MnO_4^-)/(MN^(2+))` = 1.51 V   `E^0 (Cr^(3+))/(Cr)` = – 0.74 V

पर्याय

  • \[\ce{Cr^{3+}}\] 

  • \[\ce{MnO^{-}4}\]

  • \[\ce{CrO^{2-}7}\]

  • \[\ce{Mn^{2+}}\] 

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उत्तर

\[\ce{Cr^{3+}}\] 

Explanation:

 \[\ce{Cr^{3+}/Cr}\] has most negative value of standard reduction potential. Hence, \[\ce{Cr^{3+}}\]  is the most oxidized species.

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पाठ 3: Electrochemistry - Exercises [पृष्ठ ३५]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
पाठ 3 Electrochemistry
Exercises | Q I. 12. | पृष्ठ ३५

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