2. a student was given an antacid tablet that contained the active ingredient calcium carbonate. the tablet weighed 4.2810 g. he dissolved it in 25.00 ml of 0.6200 m hcl and heated it gently for several minutes. after cooling, it took 37.12 ml of 0.1414 m naoh to titrate the excess acid to the phenolphthalein end point. a. write a balanced equation for the reaction of the antacid with hcl. b. write a balanced equation for the reaction of hcl with naoh. c. how many moles of the hcl were used to dissolve the antacid tablet? d. how many moles of naoh were needed to titrate the excess acid? e. how many moles of acid per gram of tablet were neutralized? f. how many grams of caco3 were in the antacid tablet?