16. Solution to Chemistry Problem

16. Solution to Chemistry Problem

43. Calculate the molar concentration of the equivalent of perchloric acid solution if the following results were obtained during photometric titration of a 0.0696 g sample of diphenylguanidine (C13H13N3) with the indicator tropeoline at λ=540 nm
V(HCLO4) 0.0 1.0 2.0 2.4 2.8 3.2 3.4 3.6 3.8 4.0 4.2 4.4 4.8
A 0.07 0.07 0.08 0.09 0.10 0.13 0.17 0.330 0.370 1.07 1.07 1.07 1.07

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