27. Solving a chemistry problem

123. In the following examples (Table 11), it is required to calculate and construct a titration curve for a 100 ml solution of the specified substance. The dilution of the solution during titration can be ignored in the calculations. Mark the jump area and the rMeTE value at the equivalence point.
Table 11
No.
p/p Salt
Metal Concentration
salts, m/l Auxiliary ligand L
and its concentration, m/l pH instability constants
ML complexes
K1 K2
123 Ca(NO3)2 10–2 OH– 0.1 12 3.5•10–2 –

Note. When determining the coefficient β, one should limit oneself to two values of the instability constants of metal complexes with an auxiliary ligand L to simplify the calculations.