Water Chem - project3_w_notes

0becauseweusethemole fractionconcentrationscale

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Unformatted text preview: we use the mole fraction concentration scale). Equilibrium Between Solids and Solutions • 2 2 Ca CO3 2 Ca 2 CO3 K sp CaCO3 s The equilibrium constant for dissolution of a solid is called the solubility product, Ksp, e.g.: 2 CaCO3 s Ca 2 CO3 • If [Ca2+][CO32] > Ksp, solid will precipitate; if [Ca2+][CO32] < Ksp, solid will dissolve (if it is already present) An industry produces 150 L/min of a waste stream at pH 2.0 that contains 102 mol/L Zn2+. To avoid toxicity in the stream that the waste enters, the Zn2+ concent...
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