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3 September, 15:00

How would an equation be written for the dissociation of ionic solutes in water?

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  1. 3 September, 15:18
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    1) Assume M refers to a general element and Z referes to other general element.

    2) Assume the chemical formula of the ionic compound is MₓZₐ

    3) Then the dissociaton would be written:

    MₓZₐ → XMᵃ⁺ + AZˣ⁻

    That means that the ionic compoud will lead to the X cations Mᵃ⁺ whose oxidation state are a+, and A anions Zˣ⁻ whose oxidation state is x⁻.

    5) For example: MgBr₂ (aq) → Mg⁺² (aq) + 2Br⁻ (aq)

    6) Explanation: since the water molecules are polar, they will surround (solvate) the three ions that form the compound MgBr₂, overcoming the electrostatic forces that hold together the atoms in the ionic lattice.
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