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If the water used in preparation of your zinc chloride solution in the volumetric flask contained...

If the water used in preparation of your zinc chloride solution in the volumetric flask contained some levels of Pb2+ or Ca2+ metal which is also known to chelate with EDTA. What will be the affect on the following? A) The number of moles of EDTA calculated B) The number of moles of Zinc calculated? C) the number of moles of chloride ion calculated D) Empirical formula that is the ratio zinc to chloride obtained

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