88. Solving a chemistry problem

53. The analyzed substance A or its mixture with B was placed in a measuring flask of capacity V1 and the volume was brought up 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 7 were obtained. Plot a titration curve and calculate the content of the substances indicated in the table. 8.
Table No. 7
Data for plotting graphs
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 Readings

of the 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 table 7 A B V1, ml V2 ml R C(R), n. Determine 53 1 HNO3 - - 30 KOH 1.012 p*(A), g/l)