28. Solving a chemistry problem

28. Solving a chemistry problem

55. The analyte A or its mixture with B was placed in a volumetric flask of capacity V1 and the volume was adjusted to the mark. When titrating an aliquot of V2 with a solution of reagent R with a concentration of C(R), the results given in table were obtained. 7. Construct a titration curve and calculate the content of substances indicated in the table. 8.
Table No. 7
Data for plotting
No. V(R), ml 7.00 8.00 9.00 10.00 11.00 12.00 13.00 14.00 15.00 16.00
1 Shows-
nia

device
2.50 2.20 1.90 2.05 2.20 2.30 2.45 -
- -
2 2.62 2.35 2.08 1.96 2.00 2.03 2.06 2.38 2.74 3.10
3 2.66 2.39 2.12 2.02 2.04 2.08 2.11 2.25 2.60 2.96
Table No. 8
No. No. in
table 7 A B V1,
ml V2,
ml R C(R),
n. Define
55 2 KOH NH3 50 20 HCl 0.1000 m(A), m(B), g

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