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9 November, 08:54

Write the net ionic equation for this precipitation reaction. Include physical states. 2 LiCl (aq) + Pb (CH 3 COO) 2 (aq) ⟶ PbCl 2 (s) + 2 LiCH 3 COO (aq)

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  1. 9 November, 09:02
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    2Cl⁻ (aq) + Pb²⁺ (aq) → PbCl₂ (s)

    Explanation:

    The molecular equation is:

    2 LiCl (aq) + Pb (CH₃COO) ₂ (aq) → PbCl₂ (s) ↓ + 2LiCH₃COO (aq)

    We identify that a compound that is formed has a different state from the others, so a state change has been produced.

    We dissociate all the reactants and the products except for that solid compound

    2LiCl (aq) → 2Li⁺ (aq) + 2Cl⁻ (aq)

    Pb (CH₃COO) ₂ (aq) → Pb²⁺ (aq) + 2CH₃COO⁻ (aq)

    2LiCH₃COO (aq) → 2Li⁺ (aq) + 2CH₃COO⁻ (aq)

    We write the complete ionic equation:

    2Li⁺ (aq) + 2Cl⁻ (aq) + Pb²⁺ (aq) + 2CH₃COO⁻ (aq) → PbCl₂ (s) + 2Li⁺ (aq) + 2CH₃COO⁻ (aq)

    We eliminate the spectators ions, so the net ionic equation is:

    2Cl⁻ (aq) + Pb²⁺ (aq) → PbCl₂ (s)
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