A series of solutions containing NaOH, Na2CO3, and NaHCO3, alone or in compatible combination, was titrated with 0.1202 M HCl. Tabulated below are the volumes of acid needed to titrate 25.00-mL portions of each solution to (1) a phenolphthalein and (2) a bromocresol green end point. Use this information to deduce the composition of the solutions. In addition, calculate the mass in milligrams of each solute per milliliter of each solute per milliliter of solution.

(1)(2)

(a) 22.42 ..................... 22.44

(b) 15.67 ..................... 42.13

(c) 29.64 ..................... 36.42

(d) 16.12 ..................... 32.23

(e) 0.00 ...................... 33.333