126. Solving a chemistry problem

90. Give justification for the alkalimetric method for the quantitative determination of glutamic acid according to the method of FS 42-3138-98: about 0.3 g of the substance (accurately weighed) is placed in a 100 ml conical flask and dissolved in 50 ml of freshly boiled water with low heating. The cooled solution is titrated with 0.1 mol/l sodium hydroxide solution until the yellow color changes to bluish-green (the indicator is acid bromthymol blue). Mm. glutamic acid 147.13. Write the chemistry of the reactions, derive the molar mass of the equivalent, and calculate the titer of the analyte from the working solution.