a student pipetted exactly 50.00 ml of 0.1038 m hcl into a 250-ml erlenmeyer flask containing 0.3735 g of an antacid tablet. the solution was heated and boiled to remove any co2. approximately 25 ml of water and three drops of phenolphthalein indicator was added to the erlenmeyer flask containing the hcl and antacid tablet. a 50 ml buret was rinsed and filled with a 0.1017 m naoh solution. the initial volume of the buret was read and recorded as 2.30 ml. the naoh solution was carefully added to the antacid/hcl solution until a permanent very slight pink coloration was noticed. the buret was read again and recorded as 22.82 ml. calculate the acid equivalent (g hcl/g antacid) of the antacid tablet.