99. Determine the concentration of NH4Cl in the solution (g / l), if the results were obtained by potentiometric titration with 20.0 ml of 0.5N Hg (NO3) 2 solution - Table 35.
Table 35
V, ml
(Hg (NO3) 2) 10.0 15.0 17.0 17.5 17.9 18.0 18.1 18.5 19.0
E, mV 382 411 442 457 498 613 679 700 709
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