73 Решение задачки по химии №07 364

54. Determine the normality and titer of the Pb (NO3) 2 solution, if after adding 20 ml of 0.09940 M EDTA solution to 20 ml of it, 15.24 ml of 0.1036 N ZnCl-2 solution was used for back titration of the latter.

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