139. Задачка по химии №013 991

98. Determine the concentration of NaCl in the solution (g / l), if potentiometric titration with 20.0 ml of 0.1N Hg (NO3) 2 solution obtained the results - Table 34.
Table 34
V, ml (Hg (NO3) 2) 10.0 18.0 19.0 19.5 19.9 20.0 20.1 20.5
E, mV 501 552 570 589 629 704 737 757

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