To determine the concentration of an EDTA solution, the following zinc(II) solution is prepared: metallic zinc (m(Zn) = 0.301 g) is dissolved in dilute sulfuric acid, the resulting solution is poured into a volumetric flask with a volume of 1.00 L and is filled to the graduation mark with water. The titration of an aliquot of zinc(II) solution with a volume of 20.00 ml consumes (14.42 ml; 14.40 ml; 14.48 ml; 14.44 ml; 14.49 ml) of EDTA. Calculate the concentration of EDTA solution with accuracy corresponding to the starting data, give confidence interval

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