Which of the following represents redox reactions? I. Cr2O72- + 2OH → 2Cr42- + H2O II. Zn + CuSO4 → ZnSO4 + Cu III. 2MnO4- + 3Mn2+ + 4O-H → 5MnO2 + 2H2O IV. 2Cu+ → Cu + Cu2+ (a) I, II (b) I, III (c) III, IV (d) II, III, IV

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Which of the following represents redox reactions? I. Cr2O7^2- + 2OH → 2Cr4^2- + H2O

Redox Reactions

Last Post by Reyana09 3 years ago

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16/11/2021 11:56 am

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Palak23

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Which of the following represents redox reactions?

I. Cr₂O₇^2- + 2OH → 2Cr₄^2- + H₂O

II. Zn + CuSO₄ → ZnSO₄ + Cu

III. 2MnO₄^- + 3Mn²⁺ + 4O^-H → 5MnO₂ + 2H₂O

IV. 2Cu⁺ → Cu + Cu²⁺

(a) I, II

(b) I, III

(d) II, III, IV

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16/11/2021 11:57 am

Reyana09

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Correct answer: (d) II, III, IV

Explanation:

II, III and IV are redox reactions.

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Which of the following represents redox reactions? I. Cr2O7^2- + 2OH → 2Cr4^2- + H2O

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