115. Solving a chemistry problem

2. Write the reaction equations underlying the quantitative determination of zinc sulfate according to the PS. To set the titer of sodium solution EDTA (trilon B), a weighed portion of zinc 0.8175 g and a 250 ml volumetric flask were taken.
Calculate the molar concentration of the titrated solution if 24.2 ml of sodium EDTA solution was used to titrate 25 ml of the prepared zinc solution.