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16 August, 07:57

Which of the following are redox reactions? P4 (s) + 10HClO (aq) + 6H2O (l) →4H3PO4 (aq) + 10HCl (aq) Br2 (l) + 2K (s) →2KBr (s) CH3CH2OH (l) + 3O2 (g) →3H2O (l) + 2CO2 (g) ZnCl2 (aq) + 2NaOH (aq) →Zn (OH) 2 (s) + 2NaCl (aq) For those reactions that are redox, indicate which elements are oxidized.

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  1. 16 August, 10:17
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    The answer to your question is:

    Explanation:

    a) P4⁰ (s) + 10H⁺¹Cl⁺¹O⁻² (aq) + 6H2O (l) → 4H⁺¹3P⁺⁵O4⁻² (aq) + 10H⁺¹Cl⁻¹ (aq)

    It's a Redox reaction

    Phosphorous oxidizes goes from 0 to + 5

    b) Br2⁰ (l) + 2K (s) ⁰ → 2K⁺¹Br⁻¹ (s)

    It's an oxidation reaction

    Potassium oxidizes goes from 0 to + 1

    c) CH3CH2OH (l) + 3O2 (g) → 3H2O (l) + 2 CO2 (g)

    It is not a REDOX reaction

    d) Zn⁺²Cl2⁻¹ (aq) + 2Na⁺¹O⁻²H⁺¹ (aq) → Zn⁺² (O⁻²H⁺¹) 2 (s) + 2Na⁺¹Cl⁻¹ (aq)

    It's not a REDOX reaction
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