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Precipitation of lead hydroxide Pb(OH)2on the inside wall of water pipes is used to decrease the concentration of disso...

  1. Precipitation of lead hydroxide Pb(OH)2on the inside wall of water pipes is used to decrease the concentration of dissolved lead (Pb2+) in drinking water. Assume that a water treatment plant adjusts the pH of the finished drinking water before it enters the water distribution system, which contains old lead pipes. Which pH would result in a lower concentration of dissolved lead in drinking water: pH 7 and pH 8? Prove your answer with calculations. The solubility product constant (Ksp) for Pb(OH)2is 4 ×10−20, and the atomic weight for Pb is 207.2.
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щ Ksp of PICOH = Uxio 20 доutіны АРЬ(0472 = S . РЬСон) (8) = Pь (@4:) + 20(ар) 2S writing the expression for ksp Кp = LPa**]16-20 - 3) 10-20 - 53 s 2.158107 - solubithily of Of = 25 = 2x2.15X10?– 4.31x107 [on]= 25 = 4.31x1017 finding pon of solutio

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