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18 January, 16:47

The student placed 10 mL of PbCl2 (saturated solution) in the test tube and added a pinch of NaCl. A white precipitate of PbCl2 formed. How will this affect the concentration of Pb+2?

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  1. 18 January, 17:07
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    PbCl₂ (aq) → Pb²⁺ (aq) + 2Cl⁻ (aq)

    NaCl (aq) → Na⁺ (aq) + Cl⁻ (aq)

    Pb²⁺ (aq) + 2Cl⁻ (aq) ⇄ PbCl₂ (s)

    At increase the concentration of chloride ions - concentration of lead ions decreases, the lead chloride is formed.
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