Answer to Question #322763 in Chemistry for freya

Question

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. (2 pts each)

(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