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An industrial electroplating wastewater contains 50 mg/L of Zn?. Calculate the pH required to precipitate the zinc as Zn(OH), (K., = 8.0 x 10-) to

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An industrial electroplating wastewater contains 50 mg/L of Zn"?. Calculate the pH required to precipitate the zinc as Zn(OH), (K., = 8.0 x 10-) to achieve a discharge standard of 0.5 mg/L Zn? Assume no complex formation with the OH' ligand

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