The student placed 10 mL of PbCl2 (saturated solution) in the test tube and added a pinch of lead acetate. When the test tube was shaken, a white precipitate of PbCl2 formed. As lead acetate is added, how is this affecting the QUANTITY of PbCl2?

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01-07-2017
Chemistry

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The student placed 10 mL of PbCl2 (saturated solution) in the test tube and added a pinch of lead acetate. When the test tube was shaken, a white precipitate of PbCl2 formed. As lead acetate is added, how is this affecting the QUANTITY of PbCl2?

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dec77cat dec77cat · Answer 1 · 2017-07-01T10:45:56+02:00

dec77cat dec77cat

01-07-2017

PbCl₂(s) ⇄ Pb²⁺(aq) + 2Cl⁻(aq)

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

At lead acetate disolution, concentration of lead cations will increase. According to Le Chatelie's principle equilibrium will be displaced towards formation of solid lead chloride.

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