Measurement of copper ion and zinc ion concentration

Determine the concentration of copper ions in copper sulfate solution, add excessive sodium hydroxide solution, filter to obtain precipitate, wash and dry, weigh the mass m, and the copper mass is 32/49*m, and the copper ion concentration is m/98 mol/l.chemnet.com/tech/detail.php? Id=43653 EDTA coordination determination of zinc ion /question/50464485.html? fr=qrl&。 cid=985。 Exponent = 5 & FR 2 = Query