i have an exam after 2 days and i still can't answer this question
A piece of impure Zinc weighing 0.1 g was dissolved in 100 mL of dilute acid. 10 mL of this solution is adjusted to pH 10 and titrated against 12.4 mL of 0.01 M EDTA. If the atomic weight of Zn is 65.4, what is the percentage purity of zinc in the sample?
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