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6 December, 01:57

If aqueous solutions of pb (no3) 2 and nacl are mixed, which ions, if any, are spectator ions?

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  1. 6 December, 03:00
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    The complete reaction would be:

    Pb (NO ₃) ₂ (aq) + 2 NaCl (aq) - - > PbCl ₂ (s) + 2 NaNO₃ (aq)

    Only substances in aqueous state would dissociate. Thus,

    Pb²⁺ + 2 NO₃⁻ + 2Na⁺ + 2Cl⁻ - - > PbCl₂ + 2Na⁺ + 2NO₃⁻

    The spectator ions are the ions that both appear in the left and right side of the reaction. Therefore, these are Na⁺ and NO₃⁻ ions.
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