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Balance the chemical equation by the oxi...

Balance the chemical equation by the oxidation number method.
(iii) `FeS_(2) + O_(2) to Fe_(2)O_(3) + SO_(2)`

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To balance the chemical equation `FeS₂ + O₂ → Fe₂O₃ + SO₂` using the oxidation number method, follow these steps: ### Step 1: Assign Oxidation Numbers - **Iron (Fe)** in `FeS₂`: Each Fe is in the +2 oxidation state. - **Sulfur (S)** in `FeS₂`: Each S is in the -1 oxidation state. - **Oxygen (O)** in `O₂`: O is in the 0 oxidation state (elemental form). - **Iron (Fe)** in `Fe₂O₃`: Each Fe is in the +3 oxidation state. - **Sulfur (S)** in `SO₂`: Each S is in the +4 oxidation state. ...
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Knowledge Check

  • Balance the following equation by oxidation number method: K_(2)Cr_(2)O_(7)+FeSO_(4)+H_(2)SO_(4) to Cr_(2)(SO_(4))_(3)+Fe_(2)(SO_(4))+K_(2)SO_(4)+H_(2)O

    A
    `Cr_(2)O_(7)^(2-)+14H^(+)+6Fe^(2+)rarr 6 Fe^(3+)+2Cr^(3+)+7H_(2)O`
    B
    `2K^(+)+Cr_(2)O_(7)^(2-)+7SO_(4)^(2-)+6Fe^(2+) rarr 3 Fe^(3+) + SO_(4)^(2-)+Cr^(3+)+K^(+)+7H_(2)O`
    C
    `Cr_(2)O_(7)^(2-)+2K^(+)+7H^(+)+6Fe^(2+)rarr 6 Fe^(3+) + 6 Cr^(3+) + K^(+)`
    D
    `Cr_(2)O_(7)^(2-)+7H^(+)+6Fe^(2+)rarr 3 Fe^(2+)+2Cr^(3+)+2K^(+) + 7H_(2)O`

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