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4 November, 10:18

The reaction below was carried out in an acidic solution.

[+103 - >12

Which statement is true about this equation?

Although it is unbalanced, it can be balanced by using the half-reaction method.

It has been balanced by using the half-reaction method.

It has been balanced by directly using spectator ions.

Although it is unbalanced, it can be balanced by directly using spectator ions.

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  1. 4 November, 14:09
    0
    Although it is unbalanced, it can be balanced by using the half-reaction method

    Explanation:

    Skeleton half-reaction: IO₃⁻ ⟶ I₂

    Balance atoms other than O and H: 2IO₃⁻ ⟶ I₂

    Balance O: 2IO₃⁻ ⟶ I₂ + 6H₂O

    Balance H: 2IO₃⁻ + 12 H⁺ ⟶ I₂ + 6H₂O

    Balance charge: 2IO₃⁻ + 12 H⁺ + 10e⁻ ⟶ I₂ + 6H₂O

    A and C are wrong. The original equation is not balanced. It has 3 O on he left and none on the right.

    D is wrong. You can't balance any equation by using spectator ions.
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