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Iron (III) Chloride is a common impurity in this experiment because the distilled water in the...

Iron (III) Chloride is a common impurity in this experiment because the distilled water in the solution of HCl may have passed through iron pipes. Examine your piece of filter paper carefully. If this impurity is present, why is it a horizontal streak rather than a spot? If it is not present, why would its presence as an impurity result in a horizontal streak rather than a spot?

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