140. Solving a chemistry problem
97. Determine the concentration of NaCl in the solution (g / l), if the results were obtained by potentiometric titration with 20.0 ml of 0.2N AgNO3 solution - Table 33.
Table 33
V, ml
(AgNO3) 15.0 20.0 22.0 24.0 24.5 24.9 25.0 25.1 25.5
E, mV 307 328 342 370 388 428 517 606 646
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